I need help with this

The gades foundation and hbm corporation are eager to donate generously to their favorite charities. the gades foundation donated $250 in the first month, and each month afterward their cumulative donation total increases by 100$ the hbm corporation donated $64, in the first month, and each month afterward their cumulative donation total increases by 75%. in which month will the hbm corporation's cumulative donation total first exceed the gades foundations' cumulative donation total?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.