Rachel states that -5.5 is an integer because it is a negative. is she correct why or why not?

Step-by-step explanation:

That is a false reasoning. Firstly negative integers exist such as -3 and -5. And -5.5 is not an integer because it has a number after the decimal.

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