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A rental car company charges a base fee of [tex]$\$[/tex] 40[tex]$ plus $[/tex]\[tex]$ 0.25$[/tex] per mile for the first 100 miles. For cars driven over 100 miles, the company charges the same base fee plus a reduced price of [tex]$\$[/tex] 0.18[tex]$ per mile beyond 100 miles. The piecewise function below represents the different amounts the company charges.

\[
y=\begin{cases}
40 + 0.25m, & m \leq 100 \\
40 + 0.18m, & m \ \textgreater \ 100
\end{cases}
\]

If someone drives their rental car 150 miles, how much will they owe the rental company?

A. $[/tex]\[tex]$ 37.50$[/tex]

B. [tex]$\$[/tex] 77.50[tex]$

C. $[/tex]\[tex]$ 67.00$[/tex]

D. [tex]$\$[/tex] 27.00$

Sagot :

To determine how much someone will owe the rental car company when they drive their rental car for 150 miles, we need to break down the pricing structure step-by-step.

1. Base Fee: There is a fixed base fee to rent the car, which is \[tex]$40. 2. Cost for the First 100 Miles: \[ \text{Cost per mile for the first 100 miles is } \$[/tex]0.25.
\]
The cost for driving the first 100 miles can be calculated as:
[tex]\[ 100 \text{ miles} \times \$0.25 \text{ per mile} = \$25.00. \][/tex]

3. Cost for Miles Over 100:
[tex]\[ \text{There are } 150 - 100 = 50 \text{ miles driven over 100 miles}. \][/tex]
The cost per mile for these additional miles is \[tex]$0.18. So, the cost for driving the extra 50 miles is: \[ 50 \text{ miles} \times \$[/tex]0.18 \text{ per mile} = \[tex]$9.00. \] 4. Total Cost: \[ \text{Total cost is the sum of the base fee, the cost for the first 100 miles, and the cost for the additional miles}. \] \[ \text{Total Cost} = \$[/tex]40 (base fee) + \[tex]$25.00 (\text{first 100 miles}) + \$[/tex]9.00 (\text{additional miles}) = \[tex]$74.00. \] Thus, the total amount owed to the rental car company for driving 150 miles is \$[/tex]74.00.

So the correct answer is not listed among the given choices (\[tex]$37.50, \$[/tex]77.50, \[tex]$67.00, \$[/tex]27.00) but the correct total cost calculated is \$74.00.