Help Plz! A sheet of custom-size copy paper measures 4.5 in. by 14 in. If a ream (500 sheets) of this paper has a volume of 126 in.³, how thick is the ream?

Plz give steps.

Sally deposited money into a savings account paying 4% simple interest per year. the first year, she earned $75 in interest. how much interest will she earn during the following year? show your work and explain your reasoning in the space provided below.