Find the domain of f.f(x) = 
A. {x | x ? 1}
B. {x | x ? 7}
C. {x | x ? -1}
D. {x | x ? ±1}
Answer: D
Mathematics
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Write the phrase as a mathematical expression. Use x as the variable.Some number divided by 59
A. 59x
B. 59 - x
C. 
D. 59 + x
Mathematics
Simplify the rational expression.
A. - 
B. - 
C. - 
D. 
Mathematics
A game has payoff matrix 
. R uses the strategy [ 0.4 0.6 ] and C uses the strategy 
. What is the expected value of the game?
A. 0.54 B. -0.98 C. 0.14 D. -0.90 E. none of these
Mathematics
Solve the problem.Roberto invested some money at 8%, and then invested $2000 more than twice this amount at 12%. His total annual income from the two investments was $5040. How much was invested at 12%?
A. $32,000 B. $6000 C. $3200 D. $30,000
Mathematics