The given pattern continues. Write down the nth term of the sequence suggested by the pattern.-3, 9, -27, 81, . . .
A. an = (-1)n+1 3n+1
B. an = (-1)n 3n
C. an = 3n+1
D. an = 3n
Answer: B
Mathematics
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Perform the indicated operation. Write the result in scientific notation.
A. 3.0 × 10-13 B. 3.0 × 10-1 C. 6 × 10-1 D. 6 × 10-13
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Rationalize the numerator of the expression.
?
What will be an ideal response?
Mathematics
Find the sum. Simplify when necessary.-14 + (-13) + (-17) + 11
A. 29 B. 5 C. 33 D. -33
Mathematics
Find an equation for the ellipse described.Focus at (-4, 0); vertices at (-5, 0) and (5, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics