Could i get some help here please?

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

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

An angle that measures between 90 and 180° is called a(,