The length of a rectangle is twice its width. if the width is 10, what is the area?
a) 40
b) 60
c) 100
d) 120
e) 200

E

Step-by-step explanation:

10 x 2 = 20

10 x 20 = 200

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