Midtown Delivery Service delivers packages which cost $1.45 per package to deliver. The fixed cost to run the delivery truck is $159 per day.

1. Write an equation to describe this relation.
2. Does it represent a function? Why or why not? If it is, rewrite it using function notation.
3. Graph this function.
4. What is the domain of the function?
5. What is the range of the function?
6. Find the cost to deliver 30 packages.