Write each sentence using mathematical symbols:

(a) Four added to one-fifth is the same as more than :

(b) The product of and is greater than or equal to :

Note: The middle answer blank in both parts is for you to enter "=", "", "=", "", or "=" for "less than or equal to", "less than", "equals", "greater than", or "greater than or equal to", respectively.

You can earn partial credit on this problem.