Precalculus 12 grade

Question

Your grandparents gave you a $500 gift during the holiday, that you deposited un a saving account. You plan to add $25 to the gift every week to save for summer break, which begins in June.

A) Which function represents the amount in account after each deposit as an arithmetic sequence let a1=500

B) If there are 23 weeks before your vacation begins, how much money will you have saved by summer?

Answer 1

a_n = 500 + (n - 1)(25)

a₂₃ = 500 + (22)(25)