Chemistry Reaction rate assignment help

Make sure to show your work

The rate law for a reaction is found to be rate = k[X]⁴. By what factor does the rate increase if [X] is doubled?
The rate of a hypothetical reaction involving L and M is found to triple when the concentration of L is doubled and to double when the concentration of M is doubled. Write the rate law for this reaction.

“Make sure to show your work, and your answers should be provided with the correct amount of significant figures.”