2. Hera spent $16 on dinner. Then she spent $6 on dessert and some more on a taxi ride. Including the taxi fare, she spent a total of $31. How much money did Hera spend on the taxi ride?
(a) What is the unknown information?
(b) Let x represent the unknown information. Write an addition equation that models the problem.
(c) Solve the equation.
(d) Answer the question.