On july 1st 2003 the value of a stock was $135 per share. by december 1st 2003 the value of the stock has fallen to $38 per share. what is the average rate of change in the value of the stock in dollars per month?

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

the answer is  

a.

28 ft2

step-by-step explanation: