Jerry started doing sit-ups every day. The first day he did 15 sit-ups. Every day after that he did 2 more sit-ups than he had done the previous day. Today Jerry did 28 sit-ups. Write an equation that could be solved to find the number of days Jerry has been doing sit-ups since the first day.

Question

19 July, 13:54

+1

Answers (2)

Know the Answer?

Victor Mann · Answer 1

Y=2x+15

where y=number of sit ups

x=number of days

Olsen · Answer 2

Y = sit ups, x = days

y = 2x + 15

33 = 2x + 15 (subtract 15 from both sides)

18 = 2x (divide both sides by 2)

9 = x, 9 days