What is the intermediate step in the form (x + a)^2 = b as a result of completing the square for the following equation?
5x^2-20x- 370 = -15

Vinny is interviewing for a job. he wants his take home pay to be at least $42,000.what is the least salary he can earn if he pays 25% income tax?

Which of the following points is a solution to the system of equations shown? y - x = -1 x + y = -5

The volume of a spherical hot air balloon v(r) = 4 3 ? r3 changes as its radius changes. the radius is a function of time given by r(t) = 3t. find the instantaneous rate of change of the volume with respect to t at t = 2.