Hello, I am a student studying abroad, currently i have to work on some assignments my professor gave me to solve. Since my professor doesnt have the best grasp on the english language i am having trouble understanding what he requires me to do.

I know its the holidays, but i could really use some help here ! Happy New Year to you all

Concerning a savings account for a house purchase, Mr. A has been depositing 125 monthly at 17% effective interest.

Find out:

a) The amount banked after the 12^th deposit.

b) Should the annual effective interest have been altered to 15% after the 7^th deposit and the monthly deposits kept constant, would the accumulated amount C12 be different?