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Do you know what a degree is?

No.

Oooooh

then is the 2nd and 3rd choice 5?

2nd choice is 5
3rd choice is not 5. remember to look at each term separately

I still get 5...

look at each term separately
what is the sum of the exponents on 18x^2?

good, what is the sum of the exponents on 5ab?

good, now what about -6y?

good, so our sums are 2, 2, and 1
the highest sum is 2, so the degree is 2, not 5

Ooooh I though you add them.

good, so whats the degree for the 4th choice?

Wait, but doesnt that make the 1st and 2nd both 3?

nope

2nd choice:
2x^3y^2
add the exponents

(you add the exponents WITHIN a term, not between terms)

So the order would be 4-2-1-3?

uh, not quite, least to greatest, remember?

Reverse it.

either way its not correct
lets start from the top, whats the degree for the first choice?

good, now second choice?

good, third choice?