Select the graph that represents the volume of a cube as a function of the length of an edge.

The last option is the correct graph.

Step-by-step explanation:

Let y = volume of cube and x = length of side of the cube.

Then we know that they are related as .

The graph of is the third option.

But we have to consider that length of the side can never be zero or negative.Hence we have to eliminate third option.

We have to consider the case when x is positive and the correct graph is the last option.

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33