Noah was assigned to make 64 cookies for the bake sale. He made `125\%` of that number. `90\%` of the cookies he made were sold. How many of Noah's cookies were left after the bake sale? PLEASE HELP!

Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.