MODELING REAL LIFE The linear function $y=145+30x$ represents the cost $y$ (in dollars) of an airline ticket after adding $x$ checked bags. At most 5 bags can be checked.

a. Interpret the terms and coefficient in the equation.

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Question 2
b. Find the domain of the function.
Responses

0, 1, 2, 3, 4, 5, 6
0, 1, 2, 3, 4, 5, 6

All the real numbers greater than 0.
All the real numbers greater than 0.

The set of all integers between 0 and 5.
The set of all integers between 0 and 5.

All whole numbers less than 100.
All whole numbers less than 100.
Question 3
Is the domain discrete or continuous?
The domain is
.
Question 4
Explain.
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Question 5
c. Graph the function using its domain.
Keyboard Instructions
Initial graph state
The horizontal axis goes from -1.2 to 5.4 with ticks spaced every 1 unit(s).
The vertical axis goes from -20.4 to 310 with ticks spaced every 20 unit(s).
Created graph shapes
Point with coordinates (0, 0).
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