Answer:
Let a be the width and b the length
a+3=b
a*b=54
a(a+3)=54
a^2+3a-54=0
a=6
Answer: It's A. -7.
Step-by-step explanation: I've attached an Image of my work.
Answer:1st one 2nd one and 8th
Step-by-step explanation:
Answer:
Hi, your answer is y=
-3
Step-by-step explanation:
We will use the slope-intercept formula which is

We will use two points in this case I'll use
(-2,-2) and (-8,1)
=
which can be simplified as 
Your Y will be -3
which your final answer will be y=-1/2x-3
Hope this helps :)