Problem 14
Answer: The coefficients are 11, 9, -8, and 5
Reason: The coefficients are numbers to the left of the variables
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Problem 15
Answer: Degree = 3
Reason: The degree is the largest exponent.
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Problem 16
Answer: Constant = 5
Reason: The term without any variables attached is the constant.
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Problem 17
Answer: Four terms
Reason: The four terms are 11x, 9x^3, -8y, and 5
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Problem 18
Answer: 9x^3 + 11x - 8y + 5
Reason: Write the terms with the largest exponent first. Then have the exponents count down.