Simplify the following expressions. Simplified expressions must be in lowest terms, and exponents must be positive numbers.
A. 
B. 
C. 
D. none of these
Answer: C
Mathematics
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Write each expression using the LCD as the denominator.
; 
; 
A. 
; 
; 
B. 
; 
; 
C. 
; 
; 
D. 
; 
; 
Mathematics
Solve the inequality symbolically. Express the solution set in interval notation.
< 
A. (-?, 
)
B. (4, ?)
C. (2, ?)
D. (
, ?)
Mathematics
How long will it take an investment of $1,000 to double if the investment earns interest at the rate of 8% / year compounded monthly? Round your answer to one decimal place. ?
A. 8.9 year(s) B. 8.6 year(s) C. 8.4 year(s) D. 8.7 year(s)
Mathematics
Simplify the expression using the imaginary unit i.
A. -18i
B. 18i
C. -i
D. ±18
Mathematics