Question

This table shows the amount a parking meter charged in hours.
Solve for the cost per hour. Use the calculator if you need to.
Number of Hours (h) Cost (c) Cost per Hour (
h
c
​
)
9 $18.00 $
17 $63.75 $
27 $121.50

Answer 1

To find the cost per hour for each given number of hours and their respective costs, we can use the formula:

\[
\text{Cost per hour} = \frac{\text{Cost}}{\text{Number of Hours}} = \frac{c}{h}
\]

Let's calculate the cost per hour for each entry in the table.

1. For **9 hours** at **$18.00**:
\[
\text{Cost per hour} = \frac{18.00}{9} = 2.00
\]
So, the cost per hour is **$2.00**.

2. For **17 hours** at **$63.75**:
\[
\text{Cost per hour} = \frac{63.75}{17} \approx 3.75
\]
So, the cost per hour is **$3.75**.

3. For **27 hours** at **$121.50**:
\[
\text{Cost per hour} = \frac{121.50}{27} \approx 4.50
\]
So, the cost per hour is **$4.50**.

In summary, the cost per hour for each of the entries is:
- For 9 hours: **$2.00**
- For 17 hours: **$3.75**
- For 27 hours: **$4.50**