Question

select the correct answer.
a delivery truck driver charges a fixed base price of $6 for 2 miles. after 2 miles, he charges an additional $2 for every mile. after 6 miles, he charges an additional $4 for every mile.
describe the cost of the delivery truck between 1 mile and 2 miles.

options:
a. the cost of the delivery truck between 1 mile and 2 miles is increasing.
b. the cost of the delivery truck between 1 mile and 2 miles is constant.
c. the cost of the delivery truck between 1 mile and 2 miles is decreasing.
d. the cost of the delivery truck between 1 mile and 2 miles cannot be determined from the given information.

Explanation:

From the graph, between \( x = 1 \) and \( x = 2 \) (1 to 2 miles), the \( y \)-value (cost) remains at $6. Also, the problem states a fixed base price of $6 for 2 miles, so cost doesn't change in this interval. Thus, the cost is constant here.

Answer:

B. The cost of the delivery truck between 1 mile and 2 miles is constant.