Solve the problem.In a Psychology class, the students were tested at the end of the course on a final exam. Then they were retested with an equivalent test at subsequent time intervals. Their average scores after t months are given in the table.
Using a graphing utility, fit a logarithmic function y = a + b ln x to the data. Using the function you found, estimate how long will it take for the test scores to fall below 84%. Express your answer to the nearest month.
A. 8 months
B. 12 months
C. 20 months
D. 10 months
Answer: C
Mathematics
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Evaluate.
A. 20 B. 10 C. 120 D. 60
Mathematics
Write a fraction and a percent for the shaded part of the figure.
A. 
or 0.64%
B. 
or 60%
C. 
or 6.4%
D. 
or 64%
Mathematics
For a right rectangular prism with dimensions l, w, and h, the volume V is given by V = lwh.
Answer the following statement true (T) or false (F)
Mathematics
Match the system of equations with one of the graphs.x2 + 16y2 = 16x2 + y2 = 36
A. 
B. 
C. 
D. 
Mathematics