Respuesta :
Using addition, the minimum number of shirts that Mathematics teacher is 15.
What is addition?
Addition is the "process of combined or add two or more numbers".
According to the question,
Every Monday evening, a mathematics teacher stops by the dry cleaners, drops off the shirts by the dry cleaners, drops off the shirts that he wore for the week, and picks up his previous week's load.
Drops off the shirts wore in Monday + Tuesday + Wednesday + Thursday + Friday + Saturday + Sunday is 7.
Picks up shirts wore in Monday + Tuesday + Wednesday + Thursday + Friday + Saturday + Sunday is 7.
The shirt teacher wore is 1.
The minimum number of shirts that teacher own is 7 + 7 + 1 = 15
Hence, using addition the minimum number of shirts that Mathematics teacher is 15.
Learn more about addition here
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