Classify the system and identify the number of solutions.
2x + y + 5z = 4
3x − 2y + 2z = 2
5x − 8y − 4z = 1

No solutions

Step-by-step explanation:

We need to eliminate one of the variables to solve the system. To do so, let's multiply the first equation by 8, the second equation by 4

The system becomes:

Add (1) and (2), subtract (3) from (2) to eliminate y

Then multiply the equation (5) by 4 to compare with(4)

Comparing the equations (4) and (5) we see it has no solutions as both variables have same coefficient but with different sum, 28≠40

overpriced

step-by-step explanation:

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: