The formula you need is: S = (n/2) (2a1 + (n - 1) x d) so then you plug in the numbers: S = (365/2) (2 x 1 + (365 - 1) x 1) then combine like terms: S = 66795 pennies A dollar is 100 pennies. Therefore, at the end of the year, the total savings is $667.95.
Step-by-step explanation: You just multiplying 25 with 10 and w which can be simplified as 24(w+10) and adding with the 13.5 x 10 and 13.5 x w, which can be simplified as 13.5(10+w)
