Jerry started doing sit ups every day. The first day he did 18 sit ups. Every day after that he did 4 more sit ups than he had done the previous day. Today Jerry did to 42 sit ups. Write an equation that could be solved to find the number of days Jerry has been doing sit ups, not counting the first day.

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

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?