Find the largest open intervals where the function is concave upward.f(x) = 
A. (-?, ?)
B. (0, ?), (-?, 0)
C. (0, ?)
D. (-?, 0)
Answer: C
Mathematics
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Write the number in words.64,568,009
A. Sixty-four million, five hundred thousand, sixty-eight hundred, nine B. Sixty-million, five thousand sixty-eight hundred, nine C. Sixty million, forty-five thousand, sixty-eight hundred and nine D. Sixty-four million, five hundred sixty-eight thousand, nine
Mathematics
Use the graph of f to sketch a graph of the inverse of f using a dashed curve.
A. 
B. 
C. 
D. 
Mathematics
Write the fraction or mixed number as a decimal. Round to the nearest thousandth if necessary.12
A. 0.08 B. 1.25 C. 125 D. 12.5
Mathematics
Draw a sketch to represent the vector. Refer to the vectors pictured here. 
a + (c + d)
A. 
B. 
Mathematics