Add or subtract. Simplify by collecting like radical terms, if possible.-2
- 4
+ 3
A. 138
B. -2
C. -138
D. -22
Answer: D
Mathematics
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Evaluate as specified.For f(x) = 256x, find f 
.
A. 32 B. 16 C. 2 D. 64
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Use natural logarithms to evaluate the logarithm to the nearest thousandth.log5 0.671
A. -0.173 B. 7.452 C. -4.034 D. -0.248
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Solve the problem.A certain radioactive isotope decays at a rate of 2% per 100 years. If t represents time in years and y represents the amount of the isotope left then the equation for the situation is 
In how many years will there be 92% of the isotope left?
A. 251 yr B. 417 yr C. 400 yr D. 800 yr
Mathematics
Use a table of integrals to evaluate the integral. 
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