Rob is saving to buy a new mp3 player. for every $16 he earns babysitting, he saves $7. on saturday, rob earned $48 babysitting. how much money did he save?

Suppose that f(0) = −3 and f '(x) ≤ 8 for all values of x. how large can f(4) possibly be? solution we are given that f is differentiable (and therefore continuous) everywhere. in particular, we can apply the mean value theorem on the interval [0, 4] . there exists a number c such that

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.

Hello, i need compare km^2 and km. what's difference in this?