Show that 5x^2 + 2x - 3 < 0 can be written in the form | x + 1/5 | < 4/5 if possible with the explanation as well ​

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