The sale price = 99(1 - 0.1)(1 - 0.25)(1 - 0.08) = 99 * 0.9 * 0.75 * 0.92 = $61.48
The possible x-values of the equation are options C and F. These are the + and - values that make the equation true.
To move from the point (0,0) to the point (6,9) we move up 9 units and right 6 units.
Slope = rise/run
Slope = change in y / change in x
Slope = 9 / 6
Slope = 3/2
One moment, i wills answer soon working on it