Solve the quadratic equation by completing the square.x2 + x + 7 = 0
A. 
B. 
C. 
D. 
Answer: A
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Write the equation for the plane.The plane through the points P(5, -5, 1) , Q(-3, -6, 64) and R(-1, 2, -6).
A. 7x + 7y + z = -1 B. 7x + y + 7z = 1 C. 7x + 7y + z = 1 D. 7x + y + 7z = -1
Solve the discount problem.A painting oroginally priced at $170 is on sale at 15% off. Find the sale price. Round to the nearest cent.
A. $1674.50 B. $25.50 C. $2.55 D. $144.50
Write the expression as a complex number in the form a + bi.3 - 
A. 3 + 6i B. 3 - 6i C. -3 + i D. -3
Solve the problem.An arrow is fired into the air with an initial velocity of 160 feet per second. The height in feet of the arrow t seconds after it was shot into the air is given by the function 
Find the maximum height of the arrow.
A. 80 ft B. 1200 ft C. 400 ft D. 720 ft