How many teams of 4 would be made if there were 9 horses in the stable

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?

Franco wants to double the volume of the cone. what should he do?

What is the sum of these mixed numbers 2 1/8 + 4 3/8