Gemma has 7 more five - dollar bills than ten- dollar bills. the value of the five - dollar bills equals the value of the ten- dollar bills. how many five -dollar bills and ten -dollar bills does she have?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Choose the linear inequality that describes the graph. the gray area represents the shaded region. a: y ≤ –4x – 2 b: y > –4x – 2 c: y ≥ –4x – 2 d: y < 4x – 2

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups