FINALS HELP SORRY!!!!!!

Kylie starts with $145 in her piggy bank. Each month she adds $20.

Which recursive function rule models the total amount in Kylie’s piggy bank at the end of each month?


an=20⋅an−1 ​ and a1=145

an=145⋅an−1 and a1=20

an=20+an−1 ​ and a1=145

an=145+an−1 and a1=20