Evaluate 0.53n + 5 when n= 3 and when n= -3

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?

If 25% of y is 30, what is 60% of y?

Answer! if you don’t mind, can you explain