Find the inverse of the following one-to-one function.f(x) = 7x - 4
A. f-1(x) = 
+ 4
B. f-1(x) = 
C. f-1(x) = 
D. Not invertible
Answer: C
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Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. f
= 
, saddle point
B. f
= 
, local minimum; f
= 
, local minimum
C. f
= 
, saddle point; f
= 
, saddle point
D. f
= - 
, local maximum
Complete the ordered pairs. Then graph the equation by plotting the points and drawing a line through them.
?(0, ), (4, ), (-4, )
A. (0, 0), (4, 1), (-4, -1)
B. (0, -1), (4, -2), (-4, 0)
C. (0, -1), (4, 0), (-4, -2)
D. (0, 1), (4, 2), (-4, 0)
Determine which is the better buy.6 pencils for $0.54 or 16 pencils at $1.60
A. 6 pencils B. 16 pencils
Factor completely. If a polynomial cannot be factored, say it is prime.375x4 - 81xy3
A. 3x(5x - 3y)(25x2 - 15xy + 9y2) B. 3x(5x + 3y)(25x2 - 15xy + 9y2) C. 3(5x - 3y)(25x2 + 15xy + 9y2) D. 3x(5x - 3y)(25x2 + 15xy + 9y2)