ALGEBRA I
posted by JANICE on .
You need to rent a moving truck for two days. Rider Moving Trucks charges $50 per day and $.50 per mile. UMove Trucks charges $45 per day and $0.75 per mile. Write an equation describing each situation. Graph them on the same xy axis. You only need Quadrant I because all values are positive. The x axis represents mileage. Use a scale of 0 to 100 counting by 10’s. The y axis is cost and goes from $0 to $160, counting by 20’s.
a. From your graph, after how many miles would the trucks cost the same?
b. Which company will give you a better deal if you drive less than 30 miles?
c. Which company will give you a better deal if you drive more than 60 miles?

1st step: write a function for each company. For example,
Rider: y = 50 + 0.50x
now what?