Pls help this is due really soon

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

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?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?