Simplify.
+ 
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Use the vertical line test to determine whether the relation is also a function. Then state the domain and range of the relation or function.
A. Function, D: (-?, ?), R: [-4, ?) B. Not a function, D: (-?, ?), R: [-4, ?)
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Solve the system of equations algebraically for real values of x and y.
?
?
A. 
, 
B. 
, 
C. 
, 
D. 
, 
E. 
, 
Mathematics
Solve the problem.Toss a coin 7 times. What is the number of sequences of heads or tails?
A. 48 B. 2 ? 7 C. 72 D. 27 E. none of these
Mathematics
Change the following to decimal degrees. If rounding is necessary, round to the nearest hundredth of a degree. ? 44°21' ? __________°
Fill in the blank(s) with the appropriate word(s).
Mathematics