Answer:
Step-by-step explanation:
Find the lenghth of the left and right sides using the distance formula to determine if the trapeziod is isosceles
Since 
(the sides are not equal) this is not an isosceles trapezoid
Sally is incorrect and John is possibly correct.
Find the slope of the top and bottom sides to determine if this is a trapezoid.
SR: 
PQ: 
since 
(the slopes are not equal) the top and bottom sides are not parallel therefore this is not a trapezoid. Hence, John is incorrect, and Mary is ultimately correct.
I guess the only way to use subtraction is to take the total area of the grid and subtract it by the total area around the figure. So it since it is a 10 by 10 grid, it would be 100 (since 10*10=100) minus the area around the shape.
Answer:
so thats how you solve that
($16.25×40)+($16.25×1.5×3)= $650 + 73.13 = $723.13
*regular hrs *overtime hrs
**multiplying the regular wage of $16.25 times 1.5 gives you the overtime, or time and a half, rate.
