Post a New Question

algebra word problem

posted by .

To remodel a bathroom a contractor Charles $25 er hour plus material costs, which amount to $3825. Therefore, the total cost to remodel he bathroom is given by f(x)=25x+3825 where x is the number of hours the contractor works. Find a formula for f^-1(x). What does f^-1 compute?

Thanks for your help:-)

  • algebra word problem -

    Switch the variables x and y

    y=25x+3825 would become

    x=25y+3825 (solve for y)

    x-3825=25y

    y=(x-3825)/25

    and if you do f(-fx) meaning you plug in the inverse into the x of the original function, you should get x.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math,algebra

    I have to write a linear cost function for the situation given. And identifying all variables used. the problem reads: A parking garage charges 50cents plus 35 cents per hal-hour. This is what i tried but i am definately not sure how …
  2. Science

    Two Cars A car leaves San Francisco, traveling east at 65 miles per hour. The driver takes a bathroom break of 15 min every 3 hours. Another car departs New York City at the same time, traveling at 60 miles per hour. This driver takes …
  3. MATH ALGEBRA (2ND TIME POSTING! ) Please Help!! :)

    The Cost of installing new kitchen cabinets is $150 for delivery for all the cabinets and an additional $45 to install each cabinet. a) Develop a model to give the total cost for a set of n cabinets. b) What is the total cost for a …
  4. math

    You have just received advertisements from 2 companies in your area: Greener Lawns and Lawns for Less. Greener Lawns charges an initial fee of $200, plus $50 per hour for labor costs. Lawns for Less charge an initial fee of $300, plus …
  5. math 140

    Break-Even Analysis and Cost Analysis: As a first-time homeowner, there are going to many decisions that you need to make, such as whom to hire for the upkeep of your lawn. You have just received advertisements from 2 companies in …
  6. math

    Break-Even Analysis and Cost Analysis: As a first-time homeowner, there are going to many decisions that you need to make, such as whom to hire for the upkeep of your lawn. You have just received advertisements from 2 companies in …
  7. Algebra 1

    Alex can remodel a bathroom in 2 days. Abraham can remodel the same bathroom in 4 days. How long will it take them to remodel the bathroom if they work together?
  8. Algebra

    Alex can remodel a bathroom in 2 days. Abraham can remodel the same bathroom in 4 days. How long will it take them to remodel the bathroom if they work together?
  9. math

    Jenny is remodeling her bathroom floor. She is going to use tile that is 3/4 foot long. If her bathroom is 7 1/3 feet long, how many tiles will she need to first cover the length of the bathroom?
  10. Pre-Algebra

    1. Given the function rule f(x) = x² – 3x + 2, what is the output of f(–2)?

More Similar Questions

Post a New Question