Use factoring to solve

2x^2-13x-21=0

Abiologist is recording the loss of fish in a pond. he notes the number of fish, f, in the pond on june 1. on july 1 there were 63 fish in the pond, which is 52 fewer fish than were in the pond on june 1. which equation represents this situation? a. f – 52 = 63 b. f – 63 = 52 c. 63 – f = 52 d. f – 63 = –52

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

Ineed to know the answer to this algebra question.