Simplify the rational expression. Find all numbers that must be excluded from the domain of the simplified rational expression.
A. x + 6, x ? 6
B. 
, x ? 6
C. x - 6, x ? 6
D. 
, x ? -6
Answer: A
Mathematics
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Estimate the magnitude of the error involved in using the sum of the first four terms to approximate the sum of the entire series.
A. 1.56 × 10-2 B. 3.13 × 10-2 C. 6.25 × 10-3 D. 2.60 × 10-3
Mathematics
Find the extreme values of the function and where they occur.y = 
A. Absolute maximum is - 
at x = 0; absolute minimum is 1 at x = -2.
B. Absolute maximum is 3 at x = 0; absolute minimum is 
at x = -2.
C. None
D. Absolute maximum is 
at x = 0; absolute minimum is - 1 at x = -2.
Mathematics
Write an algebraic expression for the quantity. Let x represent the unknown value.A value decreased by one.
A. 1 - x
B. x + 1
C. x - 1
D. 
Mathematics
Express the following in interval notation.
A. (0, 4) B. [0, 4) C. (0, 4] D. [0, 4]
Mathematics