Simplify the expression.
?
- 9 - ( 10 - 4 )
?
A. - 15
B. 15
C. - 23
D. - 3
E. 23
Answer: A
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Solve.An electronics manufacturer's revenue R for selling x mobile phones is given by 
A competing electronics manufacturer's revenue for selling a similar mobile phone is 
Under what circumstances will both manufacturers make the same revenue?
A. They will make the same revenue if they sell 0 or 220 phones. B. They will make the same revenue if they sell 880 phones. C. They will make the same revenue if they sell 0 or 880 phones. D. They will never make the same revenue.
Solve for y in terms of x.log 2 x + log 2 y = 1
A. y = 
B. y = 1 - x
C. y = 
D. y = 2 - x
Determine whether the equation has no solution, one solution, or infinitely many solutions.16k - 60 = 4(4k - 16)
A. One solution B. No solutions C. Infinitely many solutions
Reduce the rational expression to lowest terms.
A. a2c3
B. 
C. 
D. 