Acertain type of light bulb has a failure rate of 2.4%. what is the expected number of failures if 800 light bulbs are tested?

If there is a failure rate of 2.4% that means 2.4 out of every 100 will fail.

Since there are 800 lightbulbs if you mutiply 2.4 by 8 you will get:

19.2

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