Write a formula for the general term, or nth term, for the given sequence.
, 
, 
, 
, . . .
A. an = 
B. an = 
C. an = 
D. an = 
Answer: B
Mathematics
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Solve the system by substitution. 3u + v = 32u - 2v = -4
A. u = 
, v = 
B. u = 
, v = 
C. u = 
, v = - 
D. u = - 
, v = 
Mathematics
Use rational exponents to simplify. Write the answer in radical notation if appropriate.
7
A. 
B. 
C. 11x5
D. 11x7
Mathematics
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.log x + log (x2 - 169) - log 6 - log (x - 13)
A. log 
B. log 
C. log 
D. log 
Mathematics
Solve the problem.The decay of 230 mg of an isotope is given by A(t)= 230e-0.032t, where t is time in years. Find the amount left after 69 years.
A. 13 mg B. 25 mg C. 223 mg D. 24 mg
Mathematics