Provide an appropriate response.The rational expression 
describes the cost, in millions of dollars, to inoculate x percent of the current population of cattle against a particular virus. Choose which of the following statements are true with regard to this mathematical model.I. The expression will be undefined when x = 100.II. The cost of inoculating 90 percent of cattle is 800 million dollars more than the cost of inoculating 70 percent of cattle.III. This expression will calculate inoculation costs for any population of cattle, no matter what the size.
A. All three statements are true.
B. Only II and III are true.
C. Only I and III are true.
D. Only I and II are true.
Answer: D
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Carry out the indicated operation and give your answer with the specified number of significant digits.781 ÷ 0.00716; 3 significant digits
A. 109,078.212 B. 109,078 C. 109,100 D. 109,000
Simplify. Assume that all variables represent positive numbers.
A. 6y2
B. 6y
C. 6
D. 6
Write the fraction in decimal notation.
A. 
B. 
C. 
D. 
Solve the problem.If an object weighs m pounds at sea level, then its weight W (in pounds) at a height of h miles above sea level is given approximately by W(h) = m 
2. How much will a man who weighs 165 pounds at sea level weigh on the top of a mountain which is 14,494 feet above sea level? Round to the nearest hundredth of a pound, if necessary.
A. 164.77 pounds B. 7.72 pounds C. 165 pounds D. 165.23 pounds