Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range.y = x2 + 2x - 5
A. D: all real numbers; R: (y ? -5)
B. D: all real numbers; R: (y ? -6)
C. D: all real numbers; R: all real numbers
D. D: all real numbers; R: (y ? -6)
Answer: D
Mathematics
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Simplify by taking the roots of the numerator and the denominator. Assume all variables represent positive numbers.
A. x 
B. 
C. 4x
D. 
Mathematics
Graph the system of inequalities.y ? 2x - 3y > - 
x
A. 
B. 
C. 
D. 
Mathematics
Solve by the method of your choice.x2 + y2 = 68(x - 9)2 + y2 = 113
A. {(2, 8), (2, -8), (-2, 8), (-2, -8)} B. {(8, 2), (8, -2), (-8, 2), (-8, -2)} C. {(8, 2), (8, -2)} D. {(2, 8), (2, -8)}
Mathematics
Solve the equation on the interval [0, 2?).sec 
= cos 
A. 0, 
, ?, 
B. 
, 
C. 
, 
, 
, 
, 
, 
, 
D. 0
Mathematics