You need to set up a fraction. You can use red/blue which would be 5/7. Then, create the second ratio which would be 8/12. And there you will find your answer, which this answer also works for your answering wether you get yes or no.
For half a year Kyle's phone bill would come up to be $170
It would have to be an obtuse triangle
30. is 8 [-5] [3] [-2] -2
The answer is 20 because you plug in x=2 into f(x)