A jewely firm buys semiprecious stones to make bracelets and rings. The supplier quotes a price of $8.90 per stone for quantities of 600 stones or more, $9.30 per stone for orders of 400 to 599 stones, and $9.80 per stone for lesser quantities. The jewelry firm operates 108 days per year. Usage rate is 26 stones per day, and ordering costs are $406. a. If carrying costs are $3 per year for each stone, find the order quantity that will minimize total annual cost. (Do not roun d intermediate calculations. Round your final answer to the nearest whole number)
Order quantity stones
b. If annual carrying costs are 28 percent of unit cost, what is the optimal order size? (Do not round intermediate calculations. Round your final answer to the nearest whole number.)
Optimal order size stones
c. If lead time is 4 working days, at what point should the company reorder? (Do not round intermediate calculetions. Round your final answer to the nearest whole number)
Reorder quantity stones

answer; test-retest;

answer; monopolistic competition;

answer(b) partnership';

of the three mortgage options that demarco and tanya have to choose from, the balloon payment mortgage would be their best option, over adjustable payment and fixed payment plans.ultimately, the balloon payment plan would save demarco and tanya overall, in interest, would cost less monthly, and they would only have to make these payments for 8 years, opposing to 30 years for adjustable or fixed payment plans. 

overall, demarco and tanya would save $80,811 if they chose balloon payments over fixed payments, and would save $116,711 if they choose balloon payments over adjustable payments. benefits with choosing fixed payments over adjustable payments is that, in the end, the payments will still be $836.30 a month, while with adjustable payments, the initial monthly payments will be $763.38 to $1082.70 a month, ultimately leading to a more costly purchase. benefits with choosing fixed payments over balloon payments are not present. benefits in choosing adjustable payments over is that it has a lower interest rate, and starts with lower monthly payments initially. benefits in choosing adjustable payments over balloon payments include a lower interest rate, and lower initial monthly payments. benefits in choosing balloon payments over fixed payments include lower interest rates, lower overall price, lower monthly payments, takes less time to pay off, and does not require a downpayment. benefits in choosing balloon payments over adjustable payments include, lower monthly payments (when averaged), takes less time to pay off, and lower overall price.

hence, option c, balloon payments, is the best option for demarco and tanya to make this purchase, for it will save them a minimum of $80811, and a maximum of $116,711.