Solve the equation.
x = 9
A. {11}
B. {10}
C. {18}
D. {4}
Answer: C
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Use the Half-angle Formulas to find the exact value of the trigonometric function. sin 22.5°
A. - 
B. 
C. - 
D. 
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Which method should be used to solve the system? Explain your answer, including a description of the first step.3x2 + 10y2 =81-4x2 + 9y2 =9
What will be an ideal response?
Use Gaussian elimination or Gauss-Jordan elimination to solve the problem.A basketball fieldhouse seats 15,000. Courtside seats sell for $8, end zone for $6, and balcony for 
Total for a sell-out is 
If half the courtside and balcony and all end zone seats are sold, ticket sales total 
. How many of each type of seat are there?
A. 3000 courtside 2000 end zone 10,000 balcony B. 3200 courtside 1800 end zone 10,000 balcony C. 4000 courtside 3000 end zone 8000 balcony D. Cannot be determined