Answer:

Step-by-step explanation:
Let
n -----> number of tickets
C ----> represent the cost of buy n tickets online
we have the ordered pairs
(1,16.50) and (2,30.50)
<em>Find out the slope of the linear equation</em>
The formula to calculate the slope between two points is equal to
substitute the values
<em>Find the equation of the line in slope intercept form</em>

we have

substitute



substitute

The domain of the function is all positive integers (whole numbers) including zero
{0,1,2,3,4,...}
I think its C but I'm not 100% sure
15% - 40. -25 = 1500 percent take out the zero because they have zero value and your left with 15 which is 15%
The line plot smallest number always goes first biggest number goes last
I think it is 10 because 18×10=180 but it is close hope this helps