What is the slope of a line perpendicular to the line whose equation is
x - 3y = –18. Fully reduce your answer.

Factor this polynomial completely x^2-64

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

Bring the fraction a/a-4 to a denominator of 16-a^2