Final answer:
The statement about dividing 18 by $72 to find the cost per magazine is false; the correct method is to divide $72 by 18 months. For Marie's budget, the maximum number of magazines she could buy at $4 each is 6.
Step-by-step explanation:
The statement "Divide 18 by $72 to find the amount Mr. Herman pays for one magazine" is False. To find the cost per magazine for Mr. Herman's subscription, one should divide the total cost of the subscription ($72) by the number of months (18), not the other way around.
For Marie's budget problem, to find the maximum number of magazines she could buy in a week at $4 each, you would divide her weekly budget ($24) by the cost of one magazine ($4). This calculation is $24 / $4 = 6 magazines.