louise loves her rock collection while rock hopping along a stream she finds 10 new rocks for her collection. after she gets home she generously gives her little sister half of her rocks to begin her own collection. How many rocks did she have before her stream rock hopping adventure ……………………………………………….write an equation solve it and write a sentence for the answer. THANK YOU

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