Question

How do variables help you model real-world situations? Give an example of a model that uses variables and explain how it helps people make predictions.

Answer 1

Variables are an integral part of the equations.
With equations, you can simulate almost any process. For example, you can take the formula for payroll. (P)Payment=(T)the number of hours multiplied by the (R)rate per hour.P=T*R.In this formula, rate per hour (R) is constant (sometimes revised, of course).And the Number of hours worked is variable. Every month the number of hours changes. So, to calculate the payroll helps modeling with the use of a formula.