Haley can blow up 5 balloons in 12 minutes. At this rate, how many balloons can she blow up in 3 hours?

75

Step-by-step explanation:

12 minutes is 1/5 of an hour.

She can blow up 5 balloons, so she can blow 25 balloons per hour.

Multiply 25 by 3 you get 75.

e) none of the above because the measure of angle cba is 101°

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