Find the sum Sn of the first n terms of the geometric sequence. 3, 9, 27, 81, 243, . . . ; n = 9
A. 29,503
B. 29,560
C. 29,523
D. 29,525
Answer: C
Mathematics
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Find the first four nonzero terms in the Maclaurin series for the function.sin x cos x
A. x - 
x3 + 
x5 - 
x7+ . . .
B. x - 
x3 + 
x5 - 
x7 + . . .
C. x + 
x3 - 
x5 + 
x7 + . . .
D. 1 + x - 
x2 - 
x3 + . . .
Mathematics
Decide if the number is rational or irrational.0.77777777...
A. Irrational B. Rational
Mathematics
Express the value of the inverse hyperbolic function in terms of natural logarithms.cosh-1 
A. ln 
B. ln 
C. ln 5
D. ln 4
Mathematics
Find the real solutions, if any, of the equation. Use the quadratic formula.14x = 8x2
A. 
B. 
C. 
D. {0}
Mathematics