Explanation:
Equation of Bethany Mowing job is given by
As, the curve is a straight line passing through (0,0) and having slope 11.75 is
y=11.75 x
As, equation of slope intercept form of line is , y= m x +c, here C=0.
in one hour money earned by Bethany=11.75 ×1= $ 11.75
Equation of grant waiter job is
As, the curve is not linear,
So, in one hour that is (7-6) hour money earned by Grant = 90.30-77.40=$12.90
So, grant earns more per hour money than Bethany by the amount , 12.90 - 11.75=$1.15
Option A is true statement : Grant earns $1.15 more per hour money than Bethany.