Use the table given to answer questions (a) and (b).
- What was the total number of puffs sold?
- Express your answer in terms of z in the simplest form. If z = 25, how many less puffs were sold on Saturday than on Sunday?
Day | Number of puffs sold |
Monday to Friday | 7z per day |
Saturday | z + 39 |
Sunday | 4z - 7 |