20. Determine whether each of the following systems of equations have one solution, infinitely many or no solution. Select the correct answer for each lettered part. solutions, x+y= 5 x+y=7 b. a. - бу- бу3 30 5x + 2y = 23 3x + y =5 C. [2x+5y =-12 d. 6x+2y 12 x+7y=-15 3x + 5y 17 e. -6x-10y =-34 ulrot accounts Account A

Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter5: Systems Of Linear Equations
Section5.4: Solve Applications With Systems Of Equations
Problem 5.81TI: Translate to a system of equations and then solve: Mario wants to put a rectangular fence around the...
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after one year was $83. If a represents the amount invested in dollars in account A and b represents the
paid 3% annual interest and account B paid 5% annual interest. The total amount of interest she earned
21. Finance Adrienne invested a total of $1900 in two simple-interest money market accounts. Account A
a +b= 1900
amount invested in dollars in account B, the system of equations
0.03a+0.05b = 83
can represent
this situation. How much did Adrienne invest in each account?
H.O.T. Focus on Higher Order Thinking
22. Real-World Application The Sullivans
are deciding between two landscaping
companies. Evergreen charges a $79 startup
fee and $39 per. month. Eco Solutions charges
a $25 startup fee and $45 per month. Let c
represent the total cost in dollars and t represent
the time in months. The system of equations
c= 39t + 79
can be used to represent this
c= 45t + 25
situation.
a. In how many months will both landscaping
services cost the same? What will that cost be?
b. Which landscaping service will be less expensive in the long term? Explain.
500
Module 11
eHoughton Mifflin Harcourt Publishing Company Image Credits: O
Hustace/Corbi
Transcribed Image Text:after one year was $83. If a represents the amount invested in dollars in account A and b represents the paid 3% annual interest and account B paid 5% annual interest. The total amount of interest she earned 21. Finance Adrienne invested a total of $1900 in two simple-interest money market accounts. Account A a +b= 1900 amount invested in dollars in account B, the system of equations 0.03a+0.05b = 83 can represent this situation. How much did Adrienne invest in each account? H.O.T. Focus on Higher Order Thinking 22. Real-World Application The Sullivans are deciding between two landscaping companies. Evergreen charges a $79 startup fee and $39 per. month. Eco Solutions charges a $25 startup fee and $45 per month. Let c represent the total cost in dollars and t represent the time in months. The system of equations c= 39t + 79 can be used to represent this c= 45t + 25 situation. a. In how many months will both landscaping services cost the same? What will that cost be? b. Which landscaping service will be less expensive in the long term? Explain. 500 Module 11 eHoughton Mifflin Harcourt Publishing Company Image Credits: O Hustace/Corbi
20. Determine whether each of the following systems of equations have one solution, infinitely many solutions,
or no solution. Select the correct answer for each lettered part.
x+y=5
x+y=7
b.
a.
1-6y-6y 30
5x+2y 23
3x+y=5
12x+5y=D-12
d.
C.
6x+2y= 12
x+7y =-15
3x+ 5y = 17
e.
-6x-10y -34
Irot accounts. Account A
Transcribed Image Text:20. Determine whether each of the following systems of equations have one solution, infinitely many solutions, or no solution. Select the correct answer for each lettered part. x+y=5 x+y=7 b. a. 1-6y-6y 30 5x+2y 23 3x+y=5 12x+5y=D-12 d. C. 6x+2y= 12 x+7y =-15 3x+ 5y = 17 e. -6x-10y -34 Irot accounts. Account A
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