Solve by completing the square.x2 + 4x - 4 = 0
A. 
B. 
C. -4 ± 4
D. 
Answer: A
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Solve the inequality.(c + 7)(c - 1)(c - 6) > 0
A. (-7, 1) or (6, ?) B. (-?, 1) C. (6, ?) D. (-?, -7) or (1, 6)
Follow the principles of estimation to find an approximate value.Round the percent to the nearest ten and dollars to the nearest ten thousand.Find 75% of $44,815.59.
A. $320,000,000.00 B. $3,200,000.00 C. $33,611.69 D. $32,000.00
Solve the problem.A zoom lens in a camera makes a rectangular image on the film that is 8 cm × 5 cm. As the lens zooms in and out, the size of the image changes. Find the rate at which the area of the image begins to change (dA/df) if the length of the frame changes at 0.8cm/s and the width of the frame changes at 0.2 cm/s.
A. 1.12 m2/s
B. 
m2/2
C. 7.4 m2/s
D. 5.6 m2/s
Find the exact value of the following expression without using a calculator.csc 
A. -
B. - 
C. -
D. - 