Question

a trolley charges $3.00 just to get in the car and $1.00 for each mile traveled. how much would it cost to travel 5 miles? 8 miles? 20 miles?
how much does it cost to travel each mile after getting in the trolley?
$3.00
$1.00

Explanation:

Step1: Define cost formula

Let $C$ = total cost, $m$ = miles.
$C = 3 + 1 \times m$

Step2: Calculate 5-mile cost

Substitute $m=5$ into formula.
$C = 3 + 1 \times 5 = 8$

Step3: Calculate 8-mile cost

Substitute $m=8$ into formula.
$C = 3 + 1 \times 8 = 11$

Step4: Calculate 20-mile cost

Substitute $m=20$ into formula.
$C = 3 + 1 \times 20 = 23$

Step5: Identify per-mile cost

The problem states the per-mile charge post-boarding.
Per-mile cost = $\$1.00$

Answer:

• Cost for 5 miles: $\$8.00$
• Cost for 8 miles: $\$11.00$
• Cost for 20 miles: $\$23.00$
• Cost per mile after getting in: $\$1.00$