HELP ASAP TELL ME IF THIS IS CORRECT OR NOT

yes, no, yes, no

Step-by-step explanation:

the first two are correct, try an example for 2 and 3

b = a - 5 yes

if a = 5 and b = 0

5 - 5 = 0

a = b - 5 no

if a = 5 and b = 0

5 = 0 - 5 which is not true 5 doesnt equal -5

tube or goog would be a great resource to with that question

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong