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Question 1 of 5: Determine if k is an upper/lower bound:
f(x) = 5x6 + x5 - x4 - 4x3 - 2x2 + 4x - 5
k = 4
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A
upper bound
B
lower bound
C
inconclusive
Question 2 of 5: Determine if k is an upper/lower bound:
f(x) = x5 + 5x4 - 2x3 + 5x2 - 4x - 3
k = 2
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Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
upper bound
B
lower bound
C
inconclusive
Question 3 of 5: Determine if k is an upper/lower bound:
f(x) = 3x6 + x5 + 3x4 - x3 - x2 + 4x - 2
k = -5
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Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
upper bound
B
lower bound
C
inconclusive
Question 4 of 5: Determine if k is an upper/lower bound:
f(x) = -x4 - 6x3 + 5x2 - 4x - 10
k = 5
Hint: How can we create a new function where the leading coefficient is positive and has the same zeros as f(x)?
Next »
Select the Correct Answer Below: Correct! Cool Emoji Not Correct! Cool Emoji
A
upper bound
B
lower bound
C
inconclusive
Question 5 of 5: Determine which statement is correct:
f(x) = 3x5 - x3 + x2 - 3x - 1
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A
Since f(-1) is positive and f(1) is negative, we can say there will be a zero between -1 and 1.
B
Since both f(-1) and f(1) are negative, there will not be a zero between -1 and 1.
C
Since both f(-1) and f(1) are positive, there will not be a zero between -1 and 1.

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