The train stations of New York City and Burlington, Vermont, are approximately 295 miles apart. One train leaves New York for Burlington at 9 A. M. at an average speed of 70 mph. A second train leaves Burlington for New York 2 hours later and travels at 85 mph. At what time did they pass each other?

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.

35/2 is it i think maybe

pi or 3.14159265359 is an irratinal decimal

i may be incorrect but i believe that her first error was in step one when she multiplyed her equation by 1/4 when she should have divided it by 1/4