Iwill give you a brealeant

you don't have to to put 1,2 but you need to solve it to do 3

6 3/4

Step-by-step explanation:

 1. Use proportion:

8:4.5=24:x

8x=24*4.5

x=3*4.5

x=13.5

2. Use proportion

8:4.5=4:x

x8=18

x=18/8

x=9/4

x=2.25

3. For 24 people you need 13,5

for 12 people you need :

24:13.5=12:x

x=13.5/2

x=6.75

the answer is 45 i just did it on oddesy ware

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