Express as a sum of logarithms.log2 xy
A. log1 x - log1y
B. log2 x - log2 y
C. log1 x + log1 y
D. log2 x + log2 y
Answer: D
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Find the square root.
A. 18 B. 162 C. Not a real number D. -18
Simplify the complex fraction.
A. 
B. 
C. 
D. 
Find the LCD of the given fractions by prime factorization.
and 
A. 225 B. 5 C. -225 D. 1125
Set up an equation that can be used to solve the problem. Solve the equation and answer the question asked. A retired couple has $190,000 to invest to obtain annual income. They want some of it invested in safe certificates of deposit yielding 6%. The rest they want to invest in AA bonds yielding 12% per year. How much should they invest in each to realize exactly $19,800 per year?
A. $130,000 at 6%; $60,000 at 12% B. $150,000 at 12%; $40,000 at 6% C. $140,000 at 12%; $50,000 at 6% D. $140,000 at 6%; $50,000 at 12%