Evan worked 9 hours and made $85.50. Henry worked 6 hours and made $57.00. Are
these two rates proportional?

The expression 6x2 gives the surface area of a cube, and the expression x3 gives the volume of a cube, where x is the length of one side of the cube. find the surface area and the volume of a cube with a side length of 6m

Anyone know? will mark brainliest if correct

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.