Batteries are packed at 12 packages to a box. a box of batteries costs $51.00. how much do 7 packages costs? show how you got the answer

$29.75

Step-by-step explanation:

What you need to do is divide 51 by 12 to get 4.25.

Then you are going to multiply 4.25 by 7 to get 29.75.

You want to find your unit rate first.

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