Which of these is a unit rate?

A: 12 players on two teams
B: 12 players on 6 teams
C: 12 players on a team
D: 12 players on 12 teams

Do 12/14 and 8/10 have the same value? explain your answer.

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.

What is the difference between the predicted value and the actual value