Graph the function f(x)=-1/3x+1. use the line tool and select two points to graph.

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Find the x coordinate of the point.

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?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?