How do I find the answer to this?

100 points, hi, i’m not sure how to get the equation from the graph and table.

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18

Gia opened two savings accounts at two different banks. one account earns an annual 3.4% simple interest, and the other earns half as much. if she deposited $500 in each account, how much total interest will she have earned in 5 years? a. $34.00 b. $25.50 c. $51.00 d. $510.00