What is the common difference of an arithmetic sequence defined by the formula an=6n+3?

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

If f(x) = 2x + 2 and g(x) = x? , what is (gºf)(2)?

In the geometric progression –3, 12, −48… what term is 3,072?