Since x is the length, then x+7 has to be the width.
The area of a rectangle can be found via the formula :
A = length * width
So if we replace the area with the given number (170) and the length, and width, with what we assumed, we get..
170 = x * (x+7)
[which is.. ]
170 = x^2 +7x
0 = x^2 +7x - 170
And that is the answer.
maybe u had to multiply the rate and monthly payment
8:5 x:7
8/5=x/7 Solve for x
x=11 1/5 or 11.2 liters
The answer to this problem is =x
