Solve the system by elimination:
6x+z=21
4x+6y=34
-5y+6z= -33

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

How do you determine whether a relationship represented as as graph is linear or nonlinear

Solve for n? [tex]z = \frac{3}{4} mn[/tex]