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