What is the volume of the cone?

a 147 pi cm^3
b 21 pi cm^3
c 189 pi cm^3
d 42 pi cm^3

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

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.

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10