The option that best describes the graphed function is: D. inverse variation; k = 4
<h3>What is an Inverse Variation?</h3>Given two variables x and y has an inverse variation, the equation that models the relationship of the inverse variation is: y = k/x, where k = xy.
This means that as x increases, y decreases. This is the same for the graph given. So, it is an inverse variation.
When x = 2, y = 2. Therefore:
k = (2)(2)
k = 4
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Answer:
<u>310</u> tickets were sold in advance before school pay and <u>340</u> door tickets were sold in advance.
Step-by-step explanation:
Given:
Let number of tickets sold in advance be 'x'.
Cost of advance ticket = $3
Cost of door tickets = $5
Also given:
Thirty more tickets were sold at door in advance
Hence number of door tickets sold =
Total Money Collected = $2630
Now we can say that Total Money Collected is equal to sum of number of tickets sold in advance multiplied by Cost of advance ticket and number of door tickets sold multiplied by Cost of door tickets.
Framing in equation form we get;
Solving the equation to find the value of x we get;
Combining the like terms we get;
Now Dividing 8 on both side using division property we get;
Substituting the value of x to find number of door tickets been sold.
number of door tickets sold =
Hence, <u>310</u> tickets were sold in advance before school pay and <u>340</u> door tickets were sold in advance.