The answer is 88.4
The area of a rectangle is given by the multiplication of its base by its height :
In addition we are told the length of one of the sides (let's choose ) is:
Substituting (2) in (1):
Factoring in the numerator:
This is the length of the other side of the rectangle
the x axis i the horizontal one
the y axis is the vertical one .
m = 8
-2(5 + 6m) + 16 = -90
Start by distributing -2 inside the parentheses. This means you will multiply everything inside the parentheses (5 + 6m) by -2.
-10 - 12m + 16 = -90
Simplify the left side of the equation by combining like terms.
6 - 12m = -90
Subtract 6 from both sides of the equation to isolate the term containing the variable m and to move all other terms to the other side (right) of the equation.
-12m = -96
Divide both sides of the equation by -12 to isolate and solve for m.
m = 8
First add the shoes and the toys: 63+54 = $117
Second subtract 45 dollars from $117 = 72
Third divide 72 by 9 = 8 weeks
Answer: 8 weeks