Question

Jerry started doing sit-ups every day. The first day he did 15 sit-ups. Every day after that he did two more sit-ups than he had done the previous day. Today Jerry did 33 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.

Answer 1

33 = 15+ 2(d)

Explanation:

d = days since we are not including the starting day

sit ups = starting + 2* days

33 = 15 +2(d)