A student explains that a cylinder with radius 1 in and height 3 in has half the volume of one with radius 2 in and height 3 in. Explain the student's error.

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?

2.5 milligrams is equivalent to how many grams

Brad earns $12.75/hr and works 40 hours a week. what is his gross annual income?