f(x) = 
A. f(x) is increasing on (-?, 0) and (0, ?)
f(x) is concave up on (-?, 0) and (0, ?)
B. f(x) is increasing on (0, ?)
f(x) is concave up on (0, ?)
C. f(x) is increasing on (-?, 0) and (0, ?)
f(x) is concave up on (-?, 0)
D. f(x) is increasing on (-?, 0)
f(x) is concave up on (-?, 0)
Answer: C
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Find the value of the expression.|-|-11||
A. -11 B. 22 C. 11 D. 0
Underline the digit that occupies the given place.12.44
Tenths place
A. 
2.44
B. 12.4
C. 1
.44
D. 12.
4
Convert to radical notation and simplify.x2/11
A. x
B. 
C. 
D. 
Students participating in an experiment attended several lectures on a subject. Every month for a year after that, the students were tested to see how much of the material they remembered. The average scores for the group are given by the human memory model
where 
is the time in months. Find the average score for the group after 
months. Round your answer to three decimal places.
A. 
B. 
C. 
D. 
E. 