3.how many possible locks can a traveler creator for his luggage if the padlock is secure even with 2 digits?

the answer is c. 23/3

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right

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

b). 4320 have a nice day