Choose the equation that can be used to answer the question.
You are reading a book that has 150 pages. You read 3
pages per day and you have already finished 60 pages. How
many days will it take for you to finish the book?

Cesar bought 7 items at the candy store. he bought candy bars for $0.50 each and packs of gum for $0.95 each. he spent a total of $6.80. what system represents the solution for the number of candy bars (x) and the number of pack gum (y) purchased?