0.01x - 0.3y = 1 y = 0.1x - 2 which of the following systems is equivalent to the given system?

Next time, pls share the answer choices.

0.01x - 0.3y = 1           if multiplied by 100, this appears without fractions as
                                    x - 30y  = 100, or x = 30y + 100
      
y = 0.1x - 2,              if mult. by 10, becomes  10y = x - 20

If you want to go a step or two further and solve this, subst.  x = 30y + 100 into the 2nd equation:          10y = (30y + 100) - 20
                                            -20y = 80, and y = -4.  

Are you trying to figure out the volume?