Can you help me solve this 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

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955

How many roots does the graphed polynomial function have? 1-02