Molly purchased a new guitar that was on sale the guitar cost $172.50 before the sale the sale was 20% off how much did molly pay for the guitar

$138

Step-by-step explanation:

Answer

The answer for this question is &138

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.