Find the domain of the rational expression.
A. {x|x is a real number and x ? -1 and x ? 7}
B. {x|x is a real number and x ? -1}
C. {x|x is a real number and x ? 7}
D. {x|x is a real number}
Answer: D
Mathematics
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Evaluate.
3
A. 
B. 
C. 
D. 3
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Translate the percent problem to a proportion using x for the unknown value. Do not solve the proportion.25 is what percent of 55?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Solve the problem.The logistic growth model 
represents the population of a species introduced into a new territory after t years. What will the population be in 20 years?
A. 148 B. 290 C. 162 D. 303
Mathematics
Multiply. Simplify and leave the numerator and denominator in your answer in factored form.
? 
A. 
B. 
C. 
D. 
Mathematics