Three multiplied by the sum of 4 and a number is the same as 18 more than the number. find the number.

if n is "the number," which equation could be used to solve for the number
3n + 4 = n + 18
4(3 + n) = n + 18
3(4 + n) = n + 18

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

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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