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From module Counting Fundamentals
On Monday Taye has \2.Everydayheeithergains. Everyday he either gains .Everydayheeithergains$3ordoublestheamountofmoneyhehadonthepreviousday.HowmanydifferentdollaramountscouldTayehaveonThursday,or doubles the amount of money he had on the previous day. How many different dollar amounts could Taye have on Thursday,ordoublestheamountofmoneyhehadonthepreviousday.HowmanydifferentdollaramountscouldTayehaveonThursday,3$ days later?
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