The diagram represents the carpeted section of a children's library. The dashed lines divide the carpeted section into 3 regions. All dimensions are in feet. Complete questions 3–4 below.
Click the icon to view the diagram of the carpeted area.

How is working backward similar to solving an equation?

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

Which function represents the sequence? f(n)=n+3 f(n)=7n−4 f(n)=3n+7 f(n)=n+7