please solve

Costs for maintaining student housing at a small college over a 7-year period are expected to be $5200 In year 1, increasing at the rate of 10% per year through year 7. At an interest rate of 10% per year, what present worth is equivalent to the series of maintenance costs? 1) $31,460 O 2) $33,091 ( 3) $35, 112 ( 4) $39,450