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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

Percent increase and decrease. original number: 45 new number: 18

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b