Solve the problem.Suppose that y is inversely proportional to x and that y = 26.4 when x = 6. Find the constant of proportionality k. Then use y = 
to find y when x = 36.
A. k = 4.4; y = 158.4
B. k = 176.4; y = 4.9
C. k = 146.4; y = 4.4
D. k = 158.4; y = 4.4
Answer: D
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Write an expression in terms of the given variable(s) that represents the indicated quantity.For a particular event, a student pays $10 per ticket and a nonstudent pays $13 per ticket. If x students and 200 nonstudents buy tickets, find the total revenue from the sale of the tickets in terms of x.
A. 10x + 13 dollars B. 10x + 2600 dollars C. 10x + 1300 dollars D. 10 + 2600x dollars
Find an equation for the indicated ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
- 
= 1
D. 
+ 
= 1
Write out all the terms of the series.
A. x + 2x + 3x + 4x + 5x B. x + 2x2 + 3x3 + 4x4 + 5x5 C. x + 2x2 + 3x3 + 4x4 + 5x5 + . . . D. 1 + 2x2 + 3x3 + 4x4 + 5x5
Use the graph to determine the function's domain and range. Write the domain and range in interval notation.
A. domain: [0, ?) range: [3, ?) B. domain: [0, ?) range: [0, ?) C. domain: [0, ?) range: (-?, ?) D. domain: (-?, ?) range: [3, ?)