Find the function value.Let f(x) = 5x. Find f(-2).
A. -10
B. 
C. 
D. - 
Answer: B
Mathematics
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Determine if the set is the empty set.{x|x is a day of the week whose name begins with the letter Y}
A. Yes, it is the empty set. B. No, it is not the empty set.
Mathematics
Solve by completing the square to obtain exact solutions.x2 + 4x + 53 = 0
A. -2 ± 
i
B. -2 ± 7i
C. 5, -9
D. 2 ± 7i
Mathematics
Identify which of the graphs could be the graph of a polynomial function.f(x) = 6x3 - 7x - x5
A. 
B. 
C. 
D. 
Mathematics
Sketch the graph of the function.y = cos (-3?x)
A. 
B. 
C. 
D. 
Mathematics