Please help I don't understand T^T

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

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?