i need help please help and dont guess and FYI 492.8 ft is no the answer if you get it right ill give you and I be your friend if not then will report you ;)

I think it is the fist one bc when you do legth times width you get 308 ft

Step-by-step explanation: please dont get mad at me if im wrong

no not all of them.

step-by-step explanation:

some of them have a square base.

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10