6. Find the domain and range and sketch the graph of the function f (x) = J16 + 6x x2 . In exercises 7 - 8, nd a formula for the described function and state its domain. 7. The area of a rectangle is 100 m2. Express the perimeter as a function of the length of one of its sides. 8. A right circular cone is inside a cube. The base of the cone is inscribed in one face of the cube and its vertex is in the opposite face. Express the volume of the region between the cone and the cube as a function of the length of the edge of the cube. In exercises 9 10, the rule of a function f is given. Write an algebraic form 1110 for f (x) 9. Square the input, subtract 16, and take the square root of the result. 10. Cube the input, multiply by 3, add 5, and divide the result by the input