Lisa is flying from Bush Intercontinental Airport in Houston to Newark International Airport in New Jersey with the wind. The trip is approximately 1415 miles. Lisa then flew from Newark to DFW Airport against the wind, which is approximately 1372 miles. The wind speed was the same for both parts of the trip. Without the effects of the wind, her airplane travels at an average rate of 530 mph. The total time Lisa spends in the air is 8.5 hours. What was the speed of the wind?

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

a - base

b - exponent

so,

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)