Make a scatter plot of the data below. Speed (mph)

Stopping distance (ft)

10

12.5

20

36.0

30

69.5

40

114.0

50

169.5

60

249.0

70

325.5

Using the quadratic regression equation

y=0.06x^2 + 0.31x+ 4

predict what your stopping distance would be if you were going 80 miles per hour.

a.

363.2 ft

b.

412.8 ft

c.

355.2 ft

d.

33.6 ft