Why do we use different calculations) when figuring out how many permutations there are when repetition is allowed vs. when repetition is not allowed? How are these
calculations different from each other?

Please answer I only have 30 minutes!!

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27