i tried but i did not get it right PLEASE HELP

Question

Jerry started doing sit-ups every day. The first day he did 19 sit-ups. Every day after that he did 2 more sit-ups than he had done the previous day. Today Jerry did 41 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. Let n represent the number of days.

Answer 1

Since we are not counting the day he did 19, we'll say it's day 0.

The next day, he did 19 + 2, then 19 + 2 + 2, then 19 + 2 + 2 + 2, etc.

2 = 2(1) on day 1. 2 + 2 = 2(2) on day 2. 2 + 2 + 2 = 2(3) on day 3.

41 = 19 + 2n

Answer 2

19 + 2(n-1)

check your work

day 1 gives you 19

day 2 gives you 21

day 3 gives you 23 etc....