Determine where the function is increasing and where it is decreasing.f(x) = x2 - 4x + 3
A. increasing on (2, ?)
decreasing on (-?, 2)
B. increasing on (-1, ?)
decreasing on (-?, -1)
C. increasing on (-?, 2)
decreasing on (2, ?)
D. increasing on (-?, -1)
decreasing on (-1, ?)
Answer: A
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Use the roster method to list the elements in the set.{x | x is an integer greater than -4}
A. {-3, -2, -1, . . .} B. {-5, -6, -7, . . .} C. {-3, -2, -1, 0} D. {-5, -6, -7}
Use ZERO (or ROOT) to approximate the positive x-intercepts of the equation. Round to two decimal places.y = x4 + 1.5x3 - 8.31x2 - 3.27x + 8.39
A. 8.39 B. 1.19 and 3.44 C. 0.94 and 2.18 D. 0.87 and 2.21
Solve the problem.The concentration C (arbitrary units) of a certain drug in a patient's bloodstream can be modeled using 
where t is the number of hours since a 500 milligram oral dose was administered. Using the TABLE feature of a graphing utility, find the time at which the concentration of the drug is greatest. Round to the nearest tenth of an hour.
A. 4.8 hours B. 2.5 hours C. 3.3 hours D. 4 hours
?Locate any relative extrema and inflection points of the function 
.
?
A. ?no relative extrema; inflection point at 
B. ?relative maximum at 
; inflection point at 
C. ?relative minimum at 
; inflection point at 
D. ?no relative extrema; inflection point at 
E. ?relative minimum at 
; no inflection points