Use the dot product to find |v| when v=(-2,1)
a. -1
b. -3
c. sqrt5
d. sqrt3

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168

the height of the surface increases from the center out to the sides of the road

it is c!