The value of f(4) is 20.
We have given that,
f(n)=5n
We have to determine the value of f(4)
What is the function?
A function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function. Functions were originally the idealization of how a varying quantity depends on another quantity.
f(4)=5(4)
f(4)=20
Therefore the value of f(4) is 20.
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