Gina has 27 more barrettes than holly.

the equation g = 27 + h, where g represents the number of barrettes gina has, and h represents the number of barrettes holly has, shows this relationship.

if gina has 54 barrettes, how many barrettes does holly have?

(3x-8) or (3x+8)

step-by-step explanation:

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