Convert as indicated.7.9 kl to liters
A. 0.079 L
B. 790 L
C. 0.0079 L
D. 7900 L
Answer: D
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Divide using long division.
A. x + 9
B. 
C. x + 8 - 
D. x + 8 + 
Identify the intervals where the function is changing as requested.Decreasing
A. (-?, -3) B. (-?, -2) C. (-3, -2) D. (0, -2)
Write the set using set-builder notation.{16, 17, 18, 19}
A. {x?x is an integer less than 20} B. {16, 17, 18, 19} C. {x?x is a natural number between 15 and 20} D. {x?x is a natural number between 16 and 19}
The population of a certain country is currently 50 million and is declining at the rate of 2% a year due to natural causes. But, the population is increasing by 20,000 people a year due to immigration. Let yn be the population (in millions) after n years. Find a difference equation satisfied by yn.
A. yn = -0.02 yn-1 + 0.02, y0 = 50. B. yn = -0.02 yn-1 - 0.02, y0 = 50. C. yn = 0.98 yn-1 + 0.02, y0 = 50. D. yn = 50(0.98)n. E. none of these