Can you pls solve this 2x² + 5x - 7

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

Solve the triangle. a = 21°, c = 105°, c = 5

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