PLEASE HELP ASAP Find all excluded values for the expression.
That is, find all values of y for which the expression is undefined

If there is more than one value, separate them with commas

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?

Karen will divide her garden into equal parts. she will plant corn in 8/12 of the garden. what is the lowest number of parts she can divide her garden into?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.