Find the mean of the list of data.42, 64, 48, 38, 84, 53, 98, 109
A. 66
B. 65
C. 68
D. 67
E. 69
Answer: D
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Write the equation of the quadratic function whose graph is a parabola containing the given points.(0, 3), (3, 15), (-3, 27)
A. y = 2x2 + 2x +1 B. y = 3x2 - 2x + 3 C. y = 2x2 - x + 3 D. y = 2x2 - 2x + 3
Solve the problem.There were 620 people at a play. The admission price was $2 for adults and $1 for children. The admission receipts were $960. How many adults and how many children attended?
A. 340 adults and 280 children B. 280 adults and 340 children C. 240 adults and 380 children D. 140 adults and 480 children
Use the right triangle shown and find the missing length. If necessary, round to three decimal places. 
c = 13, a = 5
A. 4.243 B. 2.828 C. 12 D. 13.928
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists.4x - y + 3z=12x + 4y + 6z=-325x + 3y + 9z=20
A. ? B. {(2, -7, -1)} C. {(-8, -7, 9)} D. {(8, -7, -2)}