Use the table given to answer questions (a) and (b).
- What was the total number of biscuits sold?
- Express your answer in terms of s in the simplest form. If s = 28, how many less biscuits were sold on Saturday than on Sunday?
Day | Number of biscuits sold |
Monday to Friday | 5s per day |
Saturday | s + 21 |
Sunday | 4s - 6 |