Evaluate the following expression if it represents a real number.
?
?
A. 
B. 
C. 
D. 
E. not a real number
Answer: A
Mathematics
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Find an equation for the indicated ellipse.Vertices (±5, -2) and foci (±2, -2)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Find the exact value of the expression.
A. -2
B. - 
C. -
D. - 
Mathematics
Solve the problem.How long does it take $1125 to triple if it is invested at 7% interest, compounded quarterly? Round your answer to the nearest tenth.
A. 15.8 months B. 18.1 years C. 18.1 months D. 15.8 years
Mathematics
Perform the indicated operations and write the result in standard form.2
+ 5
A. 33
B. 33i
C. -33i
D. -33
Mathematics