Find the standard equation of a parabola with the given focus or directrix. Assume that the vertex is at the origin.Focus at (
, 0)
A. y2 = 
x
B. y2 = 4
x
C. x2 = 20y
D. x2 = 4
y
Answer: B
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If 
and 
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?
A. 
B. 
C. 
D. 
E. 
Solve the problem.Among gamblers playing the slot machines and winning at a certain time (at a certain casino), the following was determined to be true about one hour later: 48% were still winning; 30% were losing; 10% had switched from the slots to table games (blackjack, roulette, etc.); and 12% had left the casino. Similarly, among gamblers playing the slots and losing at a certain time, the following was determined to be true about one hour later: 34% were winning; 47% were still losing; 15% had switched from the slots to table games; and 4% had left the casino. Among gamblers playing the slots and winning (at that certain time), what percentage eventually switch to table games? Round your answer to the nearest whole number.
A. 60% B. 56% C. 44% D. 51%
Translate the phrase to an algebraic expression.ten more than x
A. 10x B. x - 10 C. x + 10 D. 10
Name the polygon.
A. hexagon B. quadrilateral C. pentagon D. heptagon