suppose the largest possible cutout length is 3.5 inches. Over what interval is x does the volume of the box decrease as the cutout length get larger?

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.

The answer is d $21.65 i got that on a test in school before and got an a+ it should be d

Are you meaning to divide for a decimal? the answer to number one would be. 010868 etc 746 divided by 8 would be 92