Word Problems to Expressions Practice Test

Which algebraic expression represents the total distance? A cyclist rides for $x$ hours at $12$ miles per hour, then continues for $y$ hours at $9$ miles per hour, without stopping. Write an expression for the total miles traveled during the trip.

What is the algebraic expression for the total cost? A student buys $x$ textbooks at $18$ dollars each and $y$ workbooks at $12$ dollars each, then pays a $7$ dollar shipping fee. No discounts apply to the order. What expression represents the total amount paid?