How much money will you have if you started with $20 and put it in an account that earned 12% every year for 3 years?

34,560

Step-by-step explanation:

Started of with 20 and earned 12%  each year.

12% is just 12 as a whole number

so from that 20  12x12x12=1,728

1,728x20=

34.560

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.