The answer is c that what a lot of people use☻
Answer:Interface segregation principle
Explanation: Interface-segregation principle (ISP) is amongst the major principles of the object-oriented design which describes that none of the users/clients can be forced for indulging and depending on the unknown methods or methods that they don't have knowledge about.
It functions by making the interfaces visible to the user that specifically fascinates them and keeping other smaller interfaces.Interfaces are made by splitting process and making the small interfaces from them.
=A2*D2
The above formula will allow calculation of monthly cost of the first raw material.This is done by Multiplying the contents of cell A2 (Column A, Row 2) and cell D2 (Column D, Row 2). Here Cell A2 contains cost of the first raw material and Cell D2 contains number of units of the raw material produced each month. After finding the monthly cost of the first raw material in this way, the monthly cost of other raw materials can simply be calculated by dragging down the formula to apply to the rows below.
Answer:
Explanation:
This is unsolvable if you have no variable substitutes