-13=r/9+8

what does r equal?

Given the quadratic function f(x)=3x^2-24x+49 a. use “completing the squares” to convert the quadratic function into vertex form b. state the vertex c. find the x and y intercepts d. graph the function

Will give a: 122 b: 90 c: 48 d: 180

Determine the area of a triangle with (see picture below)