I have no idea how to do this, and I have been struggling so bad with it. Please let me know how to do this-

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

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

What are two numbers that have a sum of 15