Answer:
Total Cost

Explanation:
Given:
Charges for an enlargement of 1 photograph =

Delivery charge per order =

Let number of enlargements of photograph in an order be

We need to find the Total cost C of an order.
So the Total Cost would be equal to Charges for an enlargement of 1 photograph
number of enlargements of photograph in an order plus Delivery charge per order.
Total Cost per order
