Answer:
Step-by-step explanation:
The last three are irrational but I'm not sure about the first four.
Chris walked the dog for 80 minutes or 1 hour and 20 minutes
The main formula for a polynomial ax^my^n+...
the degree is the sum of the highest degree of the polynomial, it is m+n
<span>the degree of x^3y^2+7x^2y^5-3xy^8 is 9, because </span><span>3xy^8 is the term where we can find a highest value of power (8)
so the degree is degree of x, it is 1 + degree of y (it is 8)
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