I'm trying to my son with this work but i don't understand it can anyone me with these answers

Why do interests rates on loans to be lower in a weak economy than in a strong one

Jane moves from a house with 71 square feet of closet space to an apartment with 45.44 square feet of closet space. what is the percentage decrease of jane’s closet space?

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false