1. a) How much money should be deposited into an account paying interest at a rate of 7.5% compounded quarterly so that at the end of 12 years the accumulated amount will be $28,960? marks b) Amy purchases new appliances costing $23,845 and agreed to finance the amount through the store for 18 months. The store will charge her 12% interest compounded monthly on the unpaid balance. How much is her monthly payments? How much interest is paid over the period? ii) iii) What is the unpaid balance after 12 months?

College Algebra
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ISBN:9781938168383
Author:Jay Abramson
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Chapter9: Sequences, Probability And Counting Theory
Section9.4: Series And Their Notations
Problem 56SE: To get the best loan rates available, the Riches want to save enough money to place 20% down on a...
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Formulate the following as a Linear Programming Model stating the decision variables,
all the problem constraints, and the objective function. (DO NOT SOLVE)
3.
Suzie and her staff make two types of leather handbags, a deluxe handbag, and a traditional
handbag. It takes 2 hours to cut the leather for a deluxe handbag and 1 hour to cut the leather
for a traditional handbag. It takes 6 hours to sew the deluxe together, and 4 hours to sew the
traditional. It takes 2 hours to dye and dry the deluxe, and 2 hours to dye and dry the traditional.
A profit of $30 is made on each deluxe sold, and a profit of $10 is made on each traditional
sold. If the staff has a maximum of 10 hours for cutting, and 36 hours for sewing, and a
minimum of 4 hours for dying and drying, calculate the number of deluxe and traditional bags
they should produce to maximize profit?
4. Smartphone Limited conducted a marketing survey among 380 customers to gain insight about
a product. The survey revealed that 200 customers prioritized battery life above all other
features, 160 customers prioritized phone size above all other features, and 40 were
disinterested in either feature.
i) Show the information above on a Venn Diagram, using to represent the number of customers
that saw battery life and phone size equally important.
ii) Find x, the number of persons who finds both features equally important.
iii) What is the probability that a customer finds both features equally important?
iv) What is the probability that a customer chooses a phone because of battery life?
5. a) How many different car license plates can be made using-three letters followed by four digits [
if:
i)
Letters and digits can be repeated.
ii)
No letter can be repeated but digits can be repeated.
i)
No letter can be repeated, the last digit must be a 4, and no digit can be repeated.
b) A catering service offers 7 appetizers, 9 main courses, and 8 desserts. A banquet committee
selects 5 appetizers, 5 main courses, and 3 desserts. In how many ways can this be done?
Transcribed Image Text:Formulate the following as a Linear Programming Model stating the decision variables, all the problem constraints, and the objective function. (DO NOT SOLVE) 3. Suzie and her staff make two types of leather handbags, a deluxe handbag, and a traditional handbag. It takes 2 hours to cut the leather for a deluxe handbag and 1 hour to cut the leather for a traditional handbag. It takes 6 hours to sew the deluxe together, and 4 hours to sew the traditional. It takes 2 hours to dye and dry the deluxe, and 2 hours to dye and dry the traditional. A profit of $30 is made on each deluxe sold, and a profit of $10 is made on each traditional sold. If the staff has a maximum of 10 hours for cutting, and 36 hours for sewing, and a minimum of 4 hours for dying and drying, calculate the number of deluxe and traditional bags they should produce to maximize profit? 4. Smartphone Limited conducted a marketing survey among 380 customers to gain insight about a product. The survey revealed that 200 customers prioritized battery life above all other features, 160 customers prioritized phone size above all other features, and 40 were disinterested in either feature. i) Show the information above on a Venn Diagram, using to represent the number of customers that saw battery life and phone size equally important. ii) Find x, the number of persons who finds both features equally important. iii) What is the probability that a customer finds both features equally important? iv) What is the probability that a customer chooses a phone because of battery life? 5. a) How many different car license plates can be made using-three letters followed by four digits [ if: i) Letters and digits can be repeated. ii) No letter can be repeated but digits can be repeated. i) No letter can be repeated, the last digit must be a 4, and no digit can be repeated. b) A catering service offers 7 appetizers, 9 main courses, and 8 desserts. A banquet committee selects 5 appetizers, 5 main courses, and 3 desserts. In how many ways can this be done?
NAME:
INSTRUCTIONS: Read the directions to all questions very carefully. You must show all your work to get full credit for
the problem. You don't have to do the problems in order. Start where you feel the most comfortable and write
legibly!!!
1.
a) How much money should be deposited into an account paying interest at a rate of
ma
7.5% compounded quarterly so that at the end of 12 years the accumulated
amount will be $28,960?
b) Amy purchases new appliances costing $23,845 and agreed to finance the amount
through the store for 18 months. The store will charge her 12% interest compounded
monthly on the unpaid balance.
How much is her monthly payments?
i)
ii)
How much interest is paid over the period?
ii)
What is the unpaid balance after 12 months?
2.
-1
a) Given: P =
i)
Calculate the determinant of P.
ii)
Use the determinant or otherwise to find P-1.
ii)
Show that P. P-1 = 1.
iv)
Use P-1 to solve the simultaneous equations given below.
x-y =-5
3x + 2y = -5
b) Solve the following system equations using the Gauss-Jordan Method.
x+y = -1 ·
2x - y+z = 6
3x + 2z = 7
Transcribed Image Text:NAME: INSTRUCTIONS: Read the directions to all questions very carefully. You must show all your work to get full credit for the problem. You don't have to do the problems in order. Start where you feel the most comfortable and write legibly!!! 1. a) How much money should be deposited into an account paying interest at a rate of ma 7.5% compounded quarterly so that at the end of 12 years the accumulated amount will be $28,960? b) Amy purchases new appliances costing $23,845 and agreed to finance the amount through the store for 18 months. The store will charge her 12% interest compounded monthly on the unpaid balance. How much is her monthly payments? i) ii) How much interest is paid over the period? ii) What is the unpaid balance after 12 months? 2. -1 a) Given: P = i) Calculate the determinant of P. ii) Use the determinant or otherwise to find P-1. ii) Show that P. P-1 = 1. iv) Use P-1 to solve the simultaneous equations given below. x-y =-5 3x + 2y = -5 b) Solve the following system equations using the Gauss-Jordan Method. x+y = -1 · 2x - y+z = 6 3x + 2z = 7
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Author:
Jay Abramson
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