10. Last year students were offered pictures for purchase as a basic package plus sheets of portraits.
The table below shows the relationship between p, the number of sheets of portraits purchased, and c,
the total cost of all the pictures ordered.
Number of Portrait
Sheets, p
1
3
6
8
Total Cost ($), C
33
49
73
89
11.3=33
10
+23
This year the price of the basic package increased by $3. What is the new cost of 4 sheets of portraits?