The daily changes in the barometric pressure for four days are −0.05, 0.09, −0.04, and −0.08 inches. a. what is the mean change? write your answer as a decimal. the mean change is (blank) inch. question 2 b. the mean change after five days is −0.01 inch. what is the change on the fifth day? write your answer as a decimal. the change on the fifth day is (blank) inch.

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