When she puts the goo in the dark, it shrank by 75% every hour. how many hours will it take for the goo that was exposed to light for n hours to return to the original size?

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.