Make a scatter plot of the data below.
x
y
25
150
50
178
75
216
100
265
125
323
150
392
175
470.4
Use the quadratic regression feature of a graphing calculator to find a quadratic model. Round to the nearest thousdandths place.
a.
y = 7.821 x squared minus 0.936 x minus 94.034
b.
y = negative 7.821 x squared + 0.936 x minus 94.034
c.
y = 0.008 x squared + 0.518 x + 131.886
d.
y = 0.008 x squared minus 0.518 x minus 131.886
Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?