How do you figure out where a function goes on a graph?

What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y − 9 p = x + y + 7

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Find the zeros of each function. f(x) = x^2 + 5x - 6