Find the solution of the system of equations.
-4x-y=16
5x+y=-19

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

Three coins are flipped. what is the probability that there will be at least two tails?

What is the solution of log2  (3x  -  7)  =  3? 4 5