Simplify the expression. Write the result using positive exponents only.(-5)-2
A. - 
B. 
C. -25
D. 25
Answer: B
Mathematics
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The graph of 
is given in the figure. State whether 
or 
A. a > 0 B. a < 0
Mathematics
Solve the problem.A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 5% cement should he mix with 5 bags of 21% cement to produce a mix containing 9% cement?
A. 15 bags B. 25 bags C. 17 bags D. 20 bags
Mathematics
State the domain of the rational expression.
A. {x|x ? 9, x ? -7}
B. {x|x ? -9, x ? -7}
C. {x|x ? 9, x ? -7, x ? 
, x ? 0}
D. {x|x ? 9, x ? -7, x ? 
}
Mathematics
Solve the equation.
+ 
= 1
A. 16
B. 
C. 72
D. 9
Mathematics