Graph the function.y = cos 
x
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.Estimate the answer by rounding each number to the nearest hundred.871 - 224
A. 600 B. 700 C. 647 D. 1100
Mathematics
Solve.4(a + 2) - 9(a - 1) = -4(2a + 9) - 16
A. a = 23
B. a = -23
C. a = 
D. a = - 
Mathematics
Simplify.
A. 1
B. 5!
C. 5
D. 
Mathematics
Using the horizontal-line test, determine whether the function is one-to-one.
A. one-to-one B. not one-to-one
Mathematics