If the volume of a spehere is 2304pi cm cubed, find the radius and the surface area

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.

Is the square root of 4 plus the square root of 16 rational?

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585