WORTH EXTRA POINTS! Plz help me this is about using pythagorean therom to find isosolize triangels side lenghths. It really easy 7th grade math. Please help :) Thanks I will mark brainliest asap.

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Select the correct answer from the drop-down menu. subtracting 3xy^2 from 8xy^2 gives the same result as the expression. [tex]3xy ^{2} - 8xy ^{2} [/tex][tex] { - 7xy}^{2} - {2xy}^{2} [/tex][tex] {7xy}^{2} - {2xy}^{2} [/tex]

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.