Round the money amount to the specified place.$21.66 to the nearest dollar.
A. $30
B. $21.7
C. $21
D. $22
Answer: D
Mathematics
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Use the vertical line test to determine whether or not the graph is a graph in which y is a function of x.
A. function B. not a function
Mathematics
A certain bacterial culture grows in such a way that each hour the increase in the number of bacteria in the culture is 60% of the total number present at the beginning of the hour. Let yn be the number of bacteria in the culture after n hours.Find the difference equation for yn.
A. yn = 0.6yn-1 B. yn = 0.4yn-1 C. yn = 1.6yn-1 D. yn = 1.4yn-1 E. none of these
Mathematics
Well whether the function 
is even or odd. If it is neither, so indicate.
?
A. even B. odd C. neither
Mathematics
Solve using the zero product property.(x - 2)(x + 5) = 0
A. 2, -5 B. -2, 2, -5 , 5 C. 2, 5 D. -2, 5
Mathematics