What is the scale factor for the dilation with points A (-4,16) & A' (-1, 4)

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?

In the diagram of circle a what is m

Prove that quadrilateral is a rhombus.