Solve by completing the square.x2 + 4x + 53 = 0
A. 2 ± 7i
B. -2 ± 7i
C. 5, -9
D. -2 ± 
i
Answer: B
Mathematics
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Answer the question.In 2000 your salary increased by 5% . In 2001 you received a 5% pay cut. After the two changes, how does your salary compare to your original salary?
A. Cannot be determined from the information given B. It is lower. C. It is higher. D. It is unchanged.
Mathematics
Sketch the graph of the polar equation. Identify the curve.r = 2 cos ?
A. circle
B. circle
C. circle
D. circle
Mathematics
Solve the problem.Use the formula s = r? to determine the value of s in the figure. Round to two decimal places.
A. 343.77 in. B. 12.57 in. C. 0.17 in. D. 6.28 in.
Mathematics
Solve the problem. Express your answer as an integer or simplified fraction.- 
(x - 18) - 
(x - 8) = x - 7
A. 
B. 
C. 
D. 
Mathematics