State whether the given expression is one or more or none of the following: a real number, a rational number, or an irrational number.
A. None
B. Real, irrational
C. Real, rational
Answer: B
Mathematics
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Is the function graphed below one-to-one?
A. Yes B. No
Mathematics
Multiply and simplify.
? 
A. 3
B. 3
C. 3
D. 6
Mathematics
Use a table of values to graph the plane curve defined by the following parametric equations. Find a rectangular equation for the curve.x = 8 sin t, y = 8 cos t, for t in [0, 2?] 
A. 
y = x2 - 9, for x in [-2, 2]
B. 
y = 
= 64, for x in [-8, 8]
C. 
x2 + y2 = 64, for x in [-8, 8]
D. 
y2 - x2 = 64, for x in [-8, 8]
Mathematics
Sketch the graph for the equation by plotting points.x2 + 9y = 9
A. 
B. 
C. 
D. 
Mathematics