Ao wants to check that the expression 3(4x – 6) simplifies to 12x – 18. what is the value when 2 is substituted for x into both expressions?

First, let's substitute 2 for x in the expression, 3(4x-6)

3(4(2)-6) = 3(8-6) = 3(2) = 6

Next, let's substitute 2 for x in the expression, 12x-18

12(2)-18 = 24-18 = 6

The value of both expressions when substituting x for 2 is 6.

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