Use the table given to answer questions (a) and (b).
- What was the total number of cupcakes sold?
- Express your answer in terms of k in the simplest form. If k = 13, how many less cupcakes were sold on Saturday than on Sunday?
Day | Number of cupcakes sold |
Monday to Friday | 5k per day |
Saturday | k + 28 |
Sunday | 4k - 5 |