9514 1404 393
Answer:
17n +130
Step-by-step explanation:
The total cost is the sum of the transportation cost and the product of the per-student cost and the number of students.
first day cost: 40 +10n
second day cost: 90 +7n
Then the total cost is ...
(40 +10n) +(90 +7n) = 130 +17n . . . . total cost for n students
