Answer: Mathematical function
Step-by-step explanation:
A mathematical function can be defined as a binary relation between two sets . The first set is an element of second set.
Sumin has developed the equation to check and calculate the time involved per situation whether doing laundry for several hours in a day or in week for more time or doing small chunks twice in a week. She needs to create various steps for this. This will result in development of a mathematical function.