The equation C = 3.25 + 0.15w represents the total cost C (in dollars) to ship a package, where $3.25 is the fixed fee and $0.15 is charged for each ounce w.
The equation to describe the relationship between the total cost C (in dollars) to ship a package and the weight w (in ounces) is given by:
C = 3.25 + 0.15w
In this equation, the fixed fee of $3.25 represents the initial cost, and 0.15w represents the additional cost per ounce based on the weight of the package. The total cost is the sum of these two components, providing a linear relationship between the total cost and the weight of the package.