Find an explict formula for a1=-4, an=a n-1+9, n>=2

Translate this phrase into an algebraic expression. 21 more than twice goran's savings use the variable g to represent goran's savings. need to know fast.

Which of the following are accepted without proof in a logical system? check all that apply.

If a runner who runs at a constant speed of p miles per hour runs a mile in exactly p minutes what is the integer closest to the value p