Provide an appropriate response.Find the circumference of a circle with a radius of 7 in. (round to the nearest hundredth).
Fill in the blank(s) with the appropriate word(s).
43.98 in.
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Provide an appropriate response.Perform the indicated operations without a calculator: 54 ÷ 103 =
A. 0.054 B. 0.54 C. 54,000 D. 0.0054
Convert the polar equation to a rectangular equation.r cos ? = 9
A. y2 = 9 B. x2 + y2 = 9 C. x = 9 D. y = 9
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 900 million dollars more than the cost of inoculating 60 percent of cattle.III. This expression will calculate inoculation costs for any population of cattle, no matter what the size.
A. Only I and II are true. B. All three statements are true. C. Only II and III are true. D. Only I and III are true.
Add. Write the answer in lowest terms.
+ 
+ 
A. 
B. 355
C. 1
D. 