Samantha buys candy bars for $0.75 each and increases the price by 40% to sell at the concession stand. which represents the amount of the price increase?
(a) $ 0.30
(b) $ 0.40
(c) $ 0.50
(d) $ 0.60

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done

Ineed to know the answer to this algebra question.

Two florida panthers were weighed. one weighs 6x+21 pounds and the two together weigh 14x+11 pounds how much does he other panther weigh alone