Monica has purchased a new washing machine for $900. The monthly cost of operating the washer is $50 per month. She knows that one washing machine will not be enough to support the amount of laundry needed to be washed so she plans on buying a second washer. Her budget will allow her to make the second purchase when the average monthly cost of the first washer is less than $80. Determine how soon Monica can purchase a second washer. a. Anytime after 4 years b. Anytime after 3.5 years c. Anytime after 2 years d. Anytime after 3 years e. Anytime after 4.5 years f. Anytime after 2.5 years