B, the first differences are not the same , that proves it is not linear. The second set of differences are the same this shows it is a quadratic function.
By definition, the volume of a sphere is: Where, r: sphere radio Substituting values we have: Rounding the result to the nearest tenth: Answer: the sphere's volume is:
First we must find the volume of the cube. This is equal to side^3. 4^3=64 cubic inches. Since the pebbles are .5 pounds per cubic inch and we assume it is packed we multiply the volume by .5 This will give 32 pounds