Find the domain of the rational function.f(x) = 
A. {x|x ? 0, x ? 9}
B. all real numbers
C. {x|x ? -3, x ? 3, x ? -5}
D. {x|x ? -3, x ? 3}
Answer: D
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One root of the equation is given. Find the remaining roots of the equation using synthetic division.x3 - 2x2 - 11x + 52 = 0; -4
A. 3 + 2j, 3 - 2j
B. 3 + 4j, 3 - 4j
C. 1 + 2j, 1 - 2j
D. 1 + 2
j, 1 - 2
j
Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Solve.The function A = A0e-0.0077x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 300 pounds of the material are initially put into the vault, how many pounds will be left after 30 years?
A. 38 pounds B. 50 pounds C. 238 pounds D. 450 pounds
Which of the relations represents a function?I. 
II. 
III. 
A. I only B. II only C. I & II D. II & III E. none of these