Solve the quadratic equation by completing the square. Make sure your answer is simplified completely. If there are no real solutions, so state.x2 + 2x = 15
A. x = 5 or x = 3
B. x = -5 or x = -3
C. x = -5 or x = 3
D. x = -3 or x = 5
Answer: C
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Graph the rational function.f(x) = 
A. 
B. 
C. 
D. 
Determine two pairs of polar coordinates for the point with 0° ? ? < 360°.(0, - 
)
A. (
, 0°), (- 
, 180°)
B. (
, 270°), (- 
, 90°)
C. (
, 90°), (- 
, 270°)
D. (
, 90°), (- 
, 0°)
Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.(8
)(9
)
A. 72
B. 216
C. 648
D. 216
A division of a corporation produces "Personal Income Tax" diaries. Each diary sells for $4. The monthly fixed costs incurred by the division are $6,000, and the variable cost of producing each diary is $2.
Find the break-even point for the division. break-even production __________ units; break-even revenue $ __________. What should be the level of sales in order for the division to realize a 15% profit over the cost of making the diaries? __________ units