Solve the quadratic equation and simplify your answer. Use i notation for any complex numbers.4x2 - 5x = 9
A. x = 
, x = -1
B. x = 
, x = 1
C. x = 
, x = -1
D. x = 
, x = 1
Answer: A
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Insert four geometric means between 4 and 128.
A. 9, 15, 33, 63 B. 10, 14, 34, 62 C. 8, 16, 32, 64 D. 8, 15, 33, 64
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the x-y plane; range: all real numbers; level curves: parabolas 
B. Domain: all points in the x-y plane excluding x = 0; range: all real numbers; level curves: parabolas 
C. Domain: all points in the x-y plane excluding x = 0; range: real numbers z ? 0; level curves: parabolas 
D. Domain: all points in the x-y plane; range: real numbers z ? 0; level curves: parabolas 
List the ordered pairs from the table.Sales at the University Bookstore
A. (1, 720,000), (2, 180,000), (3, 1,060,000), (4, 300,000) B. (720,000, 1), (180,000, 2), (1,060,000, 3), (300,000, 4) C. (300,000, 1), (1,060,000, 2), (180,000, 3), (720,000, 4) D. (1, 180,000), (2, 720,000), (3, 300,000), (4, 1,060,000)
Simplify.
÷ 2 ? 
? 
A. 
B. 
C. 0.097
D. 504