How do you say 0.437 in decimals

Find the domain and range of the following function f(x) = 51x - 21+ 4

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

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount