Use the table given to answer questions (a) and (b).
- What was the total number of shortbreads sold?
- Express your answer in terms of c in the simplest form. If c = 15, how many more shortbreads were sold on Sunday than on Saturday?
Day | Number of shortbreads sold |
Monday to Friday | 3c per day |
Saturday | c + 35 |
Sunday | 4c - 7 |