3. The function f(x) is shown below graphed in solid while the function g(x) is shown dashed. Which of the following equations describes the relationship between the two functions?

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