Solve the equation.
- 4 = 1
A. f = 25
B. f = 15
C. f = -15
D. f = -25
Answer: A
Mathematics
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Find the domain of the rational expression.f(x) = 
A. {x|x is a real number and x ? 0} B. {x|x is a real number and x ? 5, x ? -9} C. {x|x is a real number and x ? 8, x ? -8} D. {x|x is a real number and x ? -5, x ? -9}
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Find the intervals on which the function is continuous.y = 
- 2x
A. (-?, -5), (-5, ?) B. (-?, 3), (3, ?) C. (-?, ?) D. (-?, -3), (-3, ?)
Mathematics
Simplify the expression. Write the result using positive exponents only.-5-3
A. 
B. 125
C. - 
D. -125
Mathematics
Find the area of the polygon.Rectangle
A. 12.5 ft2 B. 125 ft2 C. 7.5 ft2 D. 1.25 ft2
Mathematics