2) Consider a multilevel computer in which all the levels are different. Each level has instructions that are m times as powerful as those of the level below it; that is, one level r instruction can do the work of m level r-1 instructions. If a level-1 program requires k seconds to execute, how long would be equivalent programs take at level 2, 3, and 4, assuming n level r instructions are required to interpret a single r+1 instruction