Solve a plumber gave an estimate for the renovation of a kitchen. his hourly pay is s28 per hour and the plumbing parts will cost $98. his total estimate is $490 how many hours does he expect this job to take?

answer is because 4×10=40

and 98×4= is 392

40,392

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.