GED Practice

GED Math Review: Representing Functions


Questions:


A. Write a function to model each situation and use a graph to determine the value at the given point.


  1. A lawyer charges $50 for an initial consultation and then $100 per hour for services. What is the cost for a job that takes the lawyer 6 hours?
  2. A package costs $2.50 to deliver, plus $0.50 for each ounce. What is the cost for a 12-ounce package?

    B. Write a function to model each situation and determine the value at the point given.
  3. Morty's Moonbounce charges a fixed fee to deliver a bouncy-house for a child's birthday party, plus an hourly fee while it is in use. A 1-hour rental costs $40; a 5-hour rental costs $100. What does a 3-hour rental cost?
Answer:

  1. f(x) = 100x + 50
  2. f(x) = 0.50x + 2.50
  3. f(x) = 15x + 25










Reference:


Complete Test Preparation for the GED Test 2014 by Steck-Vaughn