Find an equation of variation in which y varies inversely as x and the following is true.y = 50, when x = 40

A. y = 2000x
B. y = 
C. y = 1.25x
D. y = 


Answer: D

Mathematics

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Express the amount as a positive or negative integer.One country exported $73,000,000 more than it imported, giving it a positive trade balance.

A. 73,000,000 B. -73,000,000

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Solve the problem.The markup on an item is its selling price, s, minus its cost, c. If a new printer costs $284.25 and it sells for  what is the markup?

A. $115 B. $115.74 C. $124.26 D. $684.24

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Determine whether the equation defines y as a function of x.x = y2 - 2

A. Yes B. No

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Use the Laws of Exponents to simplify. Write the answer with positive exponents. All variables are nonzero.(4s-2)2

A.
B.
C. - 
D.

Mathematics