Y is directly proportional to x
When y = 30 x = 6
Find an equation connecting y and x

An an average person has 6×10 by the power of two as many red blood cells as white blood cells a small sample of the blood has 7×10 by the power of three white blood cells about how many red blood cells are in the sample

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?