Solve by the quadratic formula. If there are no real roots, say so.7n2 = -12n - 2
A. n = 
B. n = 
C. n = 
D. n = 
Answer: A
Mathematics
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Use the formula for the general term (the nth term) of an arithmetic sequence to find the indicated term of the sequence with the given first term, a1, and common difference, d.Find a31when a1 = -10, d = -1.
A. -40 B. 20 C. -41 D. 21
Mathematics
Use the graph to estimate any solutions to the given equation on the interval 
sec2 x = 2 sec x
A. 
, 
B. None
C. 
, 
D. 
, 
Mathematics
Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.
A. 
B. x14
C. 
D. x15
Mathematics
Rewrite the equation in terms of base e. Express the answer in terms of a natural logarithm.y = 10(4.3)x
A. y = 10 ln e4.3x B. y = 4.3e(ln 10)x C. y = 10e(ln 4.3)x D. y = 4.3 ln e10x
Mathematics