The graph of a function f is given. Use the graph to answer the question.What is the domain of f? Write it in interval notation.
A. (-?, ?)
B. [-25, 25]
C. [0, ?)
D. [-20, 27.5]
Answer: B
Mathematics
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Simplify by writing the expression with positive exponents. Assume that all variables represent nonzero real numbers.t-7 ? t4 ? t-6
A. 
B. 
C. t9
D. t17
Mathematics
Find an equation for the ellipse described.Center at (0, 0); focus at (5, 0); vertex at (8, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Use an inequality to describe the interval of real numbers.
A. 3 ? x < 7 B. 3 < x ? 7 C. 3 < x < 7 D. 3 ? x ? 7
Mathematics
Find the requested characteristic.Find the period of y = - tan 
.
A. - 
B. 
C. 2?
D. 
Mathematics