Your family leaves home at 9 am. At that point, the cars odometer reads 31,247 miles. You drive until 12:30 pm when you and your family stop for lunch. At the restaurant, the odometer reads 31,492 miles. What is the unit rate in speed for miles per hour

true

step-by-step explanation:

answer: 100

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.