Divide. Express your answer as a mixed number in simplest form. Enter your answer in the box.

63/4

Step-by-step explanation:

First convert mixed fraction into a fraction=21/4 (5x4+1)

Fractions can not be solved with division sign so turn it in a multiplication sign through reciprocal.

21/4 x 3/1

63/4

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.