The heart candy costs 3.45 for 10 boxes at Walmart. They cost 3.95 for 15 boxes at target. Which store has the better buy? Justify your answer with unit prices. (Prices per box).

Diane’s bank is offering 5% interest, compounded monthly. if diane invests $10,500 and wants $20,000 when she withdrawals, how long should she keep her money in for? round to the nearest tenth of a year.

Find two numbers if their sum is 91 and the ratio is 6: 7?

Use the given information to determine the exact trigonometric value.