Perform the indicated operation. Assume that all variables are nonnegative.
(
+ 
)
A. 3
+ 9
B. 3
+ 3
C. 9
+ 3
D. 21 + 9
Answer: B
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Find the limit.
sec2 x - tan2 y + z
A. 11 B. 4 C. 10 D. 5
Solve the problem.A psychology class decides to compare the social attitudes of students from urban and rural backgrounds. Class members are divided into two groups: 5 students who grew up in an urban setting and 3 students who grew up in a rural environment. Each member of a group is to meet with each member of the other group one time, at which time the pair will interview each other by asking questions about current social issues. After all the interviews are completed, the students will compile the results and draw conclusions. Draw a graph with vertices representing students and edges representing interviews. How many interviews will there be?
What will be an ideal response?
Write a system of linear inequalities that has the given graph.
A. 
B. 
C. 
D. 
Does the system have one solution, no solution, or an infinite number of solutions?3x = y + 36x - 2y = 3
A. One B. No Solution C. Infinite number