Find all numbers a such that the given point is on the circle x2 + y2 = 1.
A. a = 0
B. a = ± 
C. a = ± 
D. a = ± 
Answer: B
Mathematics
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Match the symbol with the answer choice that names the same set of points based on the given figure.
A. 
B. 
C. 
D. None of these
Mathematics
Find an expression for the nth term of the arithmetic sequence.4, 6, 8, 10, 12, . . .
A. an = 4n B. an = n + 2n C. an = 2n + 2 D. an = 2n + 4
Mathematics
Estimate. Then find the actual difference.631.23 - 71.8
A. Estimate: 570; Actual: 569.43 B. Estimate:560; Actual: 560.43 C. Estimate: 570; Actual: 559.43 D. Estimate: 560; Actual: 559.43
Mathematics
The graph of the function y = f(x) is given below. Sketch the graph of y = 
.
A. 
B. 
C. 
D. 
Mathematics