Solve the problem. Round rates to the nearest tenth of a percent and dollar amounts to the nearest dollar when necessary.A store sells an item for $550 each. If this is a 39.8% markup on the selling price, find the equivalent markup percent on cost.
A. 28.5%
B. 47.3%
C. 66.1%
D. 550%
Answer: C
Mathematics
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Find the standard-form equation of the hyperbola centered at the origin which satisfies the given conditions.Vertices at (0, 4) and (0, -4); foci at (0, 11) and (0, -11)
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
Solve the problem.The equation y = 0.002x - 0.30 can be used to determine the approximate cost, y in dollars, of producing x items. How many items must be produced so the cost will be no more than $387?
A. 0 < x ? 193,350 B. 0 < x ? 193,651 C. 0 < x ? 193,650 D. 0 < x ? 203,332.50
Mathematics
Find the period.y = 3 sin
A. 3?
B. 2?
C. 
D. 4?
Mathematics
Use the discriminant to classify the graph; then use the quadratic formula to solve for y.
A) ellipse;
B) ellipse;
C) parabola;
D) parabola;
E) hyperbola;
Mathematics