N-10=32
add 10 to both sides
n-10+10=32+10
-10+10=0
n=42
The formula of a perimeter of a rectangle:
![P=2(l+w)](https://tex.z-dn.net/?f=P%3D2%28l%2Bw%29)
l - length
w - width
We have:
![l=2x-3,\ w=x+4](https://tex.z-dn.net/?f=l%3D2x-3%2C%5C%20w%3Dx%2B4)
Substitute:
![P=2(2x-3+x+4)=2(3x+1)\\\\_{\text{use distributive property}}\\\\=(2)(3x)+(2)(1)=\boxed{6x+2}](https://tex.z-dn.net/?f=P%3D2%282x-3%2Bx%2B4%29%3D2%283x%2B1%29%5C%5C%5C%5C_%7B%5Ctext%7Buse%20distributive%20property%7D%7D%5C%5C%5C%5C%3D%282%29%283x%29%2B%282%29%281%29%3D%5Cboxed%7B6x%2B2%7D)
A. 18 feet in 20 minutes.
356401.2, dont you have a calculator to do this?
Answer: y=8x
Explanation: The graph shows a linear relationship.