A rectangle has side lengths (x + 4) feet and (2x - 2) feet. Write a linear expression in simplest form to represent the perimeter. Find the perimeter if the value of x is 7 feet

6x + 4, 46

Step-by-step explanation:

Linear expression - (x +4) + (x +4) = 2x +8

2x -2) + (2x-2) = 4x -4                             2x+8 +4x -4 = 6x + 4

6 * 7 = 42

42 + 4 = 46

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!