Abookstore advertises 5 notebooks for $7.50. at this rate, how much would 8 notebooks cost

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

Which statements regarding efg are true? check all that apply.

If the discriminant if a quadratic equation is 4 which statement describes the roots?