X+2x+3x+4x=9x. x is a variable that represents the number of points he won so far
Answer:
50 × 0.8 = $40 is the sale price
Step-by-step explanation:
Note that this just produces three parametric equations:



In the

plane, this is just he parametric equation for an ellipse (as a function of u). The z is simply a linear function.
The surface is then an ellipse extruded along the z-axis. We get a elliptic cylinder.
Answer:
36
Step-by-step explanation: