A. write an expression in simplest form for the perimeter of each triangle
b. write another expression in simplest form that shows the difference between the perimeter of the larger triangle and the perimeter of the smaller triangle
c. find the perimeter for each triangle when x = 3

a. she will receive a refund of $278.

step-by-step explanation:

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.