Marlin was saving half-dollars. He started with 10 half-dollars in his container. He adds 2 half-dollars each day. How many half-dollars will he have on the 15th day? Choose the rule that matches this situation.

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

What is the difference between the points (4, 7) and (4, -5)? a. 0 units b. 2 units c. 4 units d. 12 units

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.