Rationalize the denominator. Simplify, if possible. Assume that any variables represent positive real numbers. 
A. 
B. 
C. 
D. 
Answer: C
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Which of the following is equivalent to the expression:? 
A.
?
x
B.
?
x
C.
?
x2
D.
?
x
E.
?
x
Solve.In 1996, an outbreak of a disease infected 11 people in a large community. By 1997, the number of those infected had grown to 35. Find an exponential growth function that fits the data. (Round decimals to three places.)
A. N(t) = 11e1.157t, where t is the number of years after 1997. B. N(t) = 11e11.57t, where t is the number of years after 1996. C. N(t) = 11e11.57t, where t is the number of years after 1997. D. N(t) = 11e1.157t, where t is the number of years after 1996.
Find the axis of symmetry of the function.f(x) = x2 - 12x + 40
A. x = -6 B. x = 6 C. x = 4 D. x = 0
Plot the point in a polar coordinate system.(4.5, -?)
A. 
B. 
C. 
D. 