Please help and answer this with an explanation on the picture thanks!

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

What point is the projection of q on a) r b) s c) t

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.