Question

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.
Cost (dollars)
20
18
16
14
12
6
4
2
0 1 2 3 4 5 6
7
Distance (miles)
8 9
10
X
OA. The cost of the delivery truck between 1 mile and 2 miles is increasing.
OB. The cost of the delivery truck between 1 mile and 2 miles is decreasing.
OC. The cost of the delivery truck between 1 mile and 2 miles is constant.
O D. The cost of the delivery truck between 1 mile and 2 miles cannot be determined from the given information.

Answer 1

Answer: B

Step-by-step explanation:

That delivery truck driver charges a fixed base price of $6 for 2 miles.

After 2 miles, he charges an additional $2 for every mile and after 6 miles, he charges an additional $4 for every mile.

We need to describe the cost of the delivery truck between 1 mile and 2 miles.

In the given graph x-axis represents the distance in miles and y-axis represents the cost in dollars.

From the given graph it is clear that the value of function is constant between x=1 and x=2.

It means the cost of the delivery truck between 1 mile and 2 miles is constant.

Therefore, the correct option is B.