He spent $11 dollars minus tax
<span>It must be the same as it was when constructing the arc above P.</span>
40 Why? 80%x X=50 or 80/100x X=50
Because it's perpendicular, you know that they must have the same slope, -3/2. So, just factor that and the point into the slope-point form to get
y = -3/2x