If y-x and x= -14, find y.

Which graph corresponds to the function f(x) = x2 + 4x – 1?

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way