Is y = square root of x proportional?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Adriver from the university of florida women’s swimming and diving team is competing in the in ncaa zone b championships

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.