They literally never even taught us this in class- what- anyways please help :’)

the 2nd one is true. the 3rd one is false because 5-4 is not 0. the 1st one is true

Step-by-step explanation:

..k :)

Step-by-step explanation:

to do this, just plug in the x values. for example, the first problem is true, because when you plug the 4 in for x, you get 4(4)=16. and 4 multiplied by 4 is true, so thats correct.

in conclusion i think these are you answers:

1) true

2) true

3) false

i hope this helped !!

3

step-by-step explanation:

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40