The answer is slope is the ratio of the vertical and horizontal changes between two points on a surface or a line. The vertical change between two points is called the rise, and the horizontal change is called the run
Y - 2 = 1/2 * ( x - 3 )
hope this helps!
Domain in interval: [6,infinity)
C = 3.5t....when t = 15
c = 3.5(15)
c = 52.50 <==