Using the horizontal-line test, determine whether the function is one-to-one.f(x) = 
A. Yes
B. No
Answer: A
Mathematics
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Use the information below to determine the indicated set. U = {x | x ? N and x ? 12} A = {x | x ? N and 6 < x < 12} B = {x | x ? N and x is even and x < 12}A' ? B
A. {1, 2, 3, 4, 5, 6, 8, 10, 12} B. {2, 3, 4, 5, 6, 8} C. {2, 4, 6} D. {1, 2, 3, 4, 5, 6, 8, 10}
Mathematics
Multiply. Write the answer in simplest form.
? 
A. 
B. 
C. 
D. 
Mathematics
Find the sum of the sequence.
A. 18 B. 6 C. 45 D. 44
Mathematics
Solve the system by the substitution method.x2 + y2 = 5 x - y = 1
A. {(2, 1), (-1, -2)} B. {(2, -1), (1, -2)} C. {(-2, -1), (-1, -2)} D. {(-2, 1), (-1, 2)}
Mathematics