39. Using this piecewise function, calculate the cost of someone who used1,280.25 minutes last month on their cell phone plan.45when x ≤ 800f(x)=45+0.25(x - 800)when x >800 and x is an integer45+0.25(x-800] +1) when x > 800 and x is not an integerA. $45.25B. $45.00C. $165.25D. $165.00

Here given function as fx=45when x≤80045+0.25x-800when x>800 and x is an…

Answered: 39. Using this piecewise function,…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter9: Quadratic Functions And Equations

Section9.6: Solving Quadratic Equations By Using The Quadratic Formula

Problem 64PFA

See similar textbooks

Similar questions

Suppose you have a job that pays $8.50 per hour and you work anywhere from 10 to 40 hours per week. a. Write an equation, with a restriction on the variable x, that gives the amount of money, y, you will earn for working x hours in one week. b. Use the function rule you have written in part (a) to complete Table 4. c. Construct a line graph from the information in Table 4. d. State the domain and range of this function.
The number of bacteria colonies on a pretty dish can be determined by the function below. b(t)=2(3)^t Which statement represents the meaning of the a and b values form the function in terms of the problem solution? A- When the observervation began, there were 2 bacteria colonies and the number of bacteria colonies increase by factor of 3 for every time interval, t. B- when the observation began there were 3 bacteria colonies and the number of bacteria colonies increase by a factor of 2 for every time interval, t. C- The final number of bacteria colonies is found by multiplying the 2 or original colonies by 3. D- After 3 minutes, there are 2 bacteria colonies.
1. Hazim has signed up a postpaid mobile plan with Nexus Telco Sdn. Bhd. The monthlycost, ? of the plan (in RM) is given by the function ?(?) = 0.30? + 7, where ? is thenumber of minutes used for calls. a. What is the cost of the plan in June 2020 if he talks for 7 minutes everyday?b. If the bill for July 2020 is RM 190, how many minutes were used in that month?c. What is the maximum number of minutes that can be used monthly for RM 220?d. In August 2020, the fixed cost has been increased from RM 7 to RM 12. Write the new function of the mobile plan cost and sketch its graph.
Suppose that the revenue R, in dollars, from selling x clocks is R ( x ) = 30x. The cost C, in dollars, of selling x clocks is C ( x ) = 0.1x2 + 7x + 400. Show all your work and explain in sentences. Find the profit function, P ( x ) = R ( x ) – C ( x ). Find the profit if x = 30 clocks are sold. Interpret P (30).
The supply function for a certain car is given by p = 32(3q) cars, where p dollars is the price per car and q is the quantity of cars, in thousands, supplied at that price. What quantity will be supplied if the price is $23,328 per car?
Suppose the function h gives the cost of Car B t years since 2005. What does the expression 3h(7) represent? 3 times the cost of Car B in 2005 3 times the cost of Car B in 2012 3 dollars more than the cost of Car B in 2012 7 times the cost of 3 Car B's in 2005 7 times the cost of Car B in year 2008
Estimate L4 and R4 and over [0,7] for the function f(x) = 7x2.
2.(8) If f(x) = 10x + 4, find f(10).
The function w(x) = -0.01x² + 0.27x + 8.60 can be used to estimate the number of self-employed workers in America in millions, x years after 1980. For what years were there (or will be there) 9.7 million self-employed worker in America? (There are 2 answers – a total of 4 points) Answers _________________ and _______________________
The amount in the savings account set up for a first time saver can be represented by the function A(n)=8(1.05)nA(n)=8(1.05)n, where nn is the number of years the money has been invested.Evan says that this means that 8 dollars was invested and the bank account increased by 5 dollars every year. Which statement shows the error Evan made and gives the correct explanation?
The amount in the savings account set up for a first time saver can be represented by the function A(n)=8(1.05)nA(n)=8(1.05)n, where nn is the number of years the money has been invested. Evan says that this means that 8 dollars was invested and the bank account increased by 5 dollars every year. Which statement shows the error Evan made and gives the correct explanation?
suppose that the selling price P of an item to the quantity x is given by P=-1/4x +50. 0<or= x <or =200 how many items must be sold to maximize the revenue?

SEE MORE QUESTIONS

Recommended textbooks for you

Glencoe Algebra 1, Student Edition, 9780079039897…

Algebra

ISBN:

9780079039897

Author:

Carter

Publisher:

McGraw Hill

Trigonometry (MindTap Course List)

Trigonometry

ISBN:

9781305652224

Author:

Charles P. McKeague, Mark D. Turner

Publisher:

Cengage Learning

Algebra & Trigonometry with Analytic Geometry

Algebra

ISBN:

9781133382119

Author:

Swokowski

Publisher:

Cengage

Glencoe Algebra 1, Student Edition, 9780079039897…

Algebra

ISBN:

9780079039897

Author:

Carter

Publisher:

McGraw Hill

Trigonometry (MindTap Course List)

Trigonometry

ISBN:

9781305652224

Author:

Charles P. McKeague, Mark D. Turner

Publisher:

Cengage Learning

Algebra & Trigonometry with Analytic Geometry

Algebra

ISBN:

9781133382119

Author:

Swokowski

Publisher:

Cengage

SEE MORE TEXTBOOKS