Solve.Erika spent 
hr on her computer visiting the history channel and the discovery channel websites. She spent 
hr at the history channel website. How many hours did she spend at the discovery channel website?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Answer: C
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For the functions f(x) and g(x), determine the domain of (f - g)(x) (the difference of f and g).f(x) = 3x + 
, g(x) = 1 - x2
A. {x ? x is a real number and x ? 1} B. {x ? x is a real number} C. {x ? x is a real number and x ? -6} D. {x ? x is a real number and x ? 6}
Solve the problem.For what numbers x, -2? ? x ? 2?, does the graph of y = csc x have vertical asymptotes?
A. -2, -1, 0, 1, 2
B. -2?, -?, 0, ?, 2?
C. - 
, - 
, 
, 
D. none
Multiply and simplify.cot x (sin x - sec x)
A. tan x - sin x B. cos x - csc x C. cot x + csc x D. cos x - cot x
Solve the problem.On January 8, ten students come down with the flu. Assume that each day, the number of students who come down with the flu doubles. So, for example, 20 students come down with the flu on January 9. Let f(t) represent the number of students who come down with the flu at t days after January 8.i) Find an equation for f.ii) Find f(7). What does your result mean in terms of the situation?
What will be an ideal response?