Use the table given to answer questions (a) and (b).
- What was the total number of wafers sold?
- Express your answer in terms of q in the simplest form. If q = 28, how many less wafers were sold on Saturday than on Sunday?
Day | Number of wafers sold |
Monday to Friday | 6q per day |
Saturday | q + 20 |
Sunday | 4q - 8 |