Answer:
Square shaped = 27 cubic inches , Rectangular shaped = 3LW cubic Inches
Step-by-step explanation:
If the dictionary is a square ( all sides are equal ) the the volume is
V = Length * Length * Length = 
V = 3 * 3 * 3 = 27 
while if its rectangular ( all side are not equal ) shaped
V = Length * Width * Height (thickness)
V = L * W * 3 = 3LW 
A) 2x + 10 equals 2x + 10
B) 7x + 3 does NOT equal 7x + 15
C) 4y - 8 doe NOT equal 4y - 2
D) 2y + 12 does NOT equal 2y - 12
Thus, A is the appropriate answer.
Hope that helped!
Actually, there would be no solution because the w's cancel out so that leaves -6=-9 and that is not true.
If we take the paycheck amount of $1020 and subtract it by the weekly salary of $300.
$1020 - $300 = $720
We get $720 in sale commissions. So to get the number of sales, you divide the $720 by the $40 per sale commission.
$720/$40 = 18
Therefore, the sales Salesman B has for the week is 18.