Ou are downloading songs to your mp3 player. the ratio of pop songs to rock songs is 5 : 4. you download 40 pop songs. how many rock songs do you download?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?