Elliot counts a group of coims starting with rhe quarters his sister counts tje same coins. she starts counting the pennies. will they get the same amont? explain

Yes, because addition is commutative

Step-by-step explanation:

As long as they count the same amount of money, it doesn't matter if Elliot started with the quarters and his sister started with the pennies, the amount of money doesn't change.

For example, counting 4 quarters and 9 pennies make the same amount of money than counting 9 pennies and 4 quarters.

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

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step-by-step explanation: