Question

A moving truck is rented at $1,000 per day plus a charge per hour of use. The moving truck was used for 9 hours one day, and the total charge was $2,700. Which equation can be used to find the charge x, in dollars, per hour of use?

Answer 1

1000 is our constant because the truck was only used one day. We also know they charge a certain amount per hour, but we do not know how much. In this case they charged that amount 9 times because the truck was used for 9 hours. The total of the constant plus the 9hour fee is 2700 dollars:

1000(1) + 9x = 2700

The reason we multiply 1000 by 1, is because we only used the truck for one day.

Solve for x

9x = 2700 - 1000 = 1700

X = 1700/9 = 188.88

The hourly fee is $188.88
The question is asking for an equation for hours of use though, so the answer is

1000(1) + 9(188.88) = C

C represents cost or charge.

Answer 2

First you have to subtract the total amount charged from the $1000 per day charge.

So: 2700-1000 = 1700

Then you divide the number of hours into the remaining money.

So: 1700/9= $188.88 per hour (or so)