PLS! PLS! PLS! PLS! HELP ME! ASAP (Science: Measuring Volumes and Mass. I had to pick a subject as math because ppl are answering most question in that subject)

I would really appreciate it, I'll make u a Brainlist, thank you, give you all stars for all I care! just pls, help me. I've been trying this over and over all day and I'm about to give up. If ANYONE has the answer PLS tell Thank u very much! ToT

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Someone answer this check out the image!

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.