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Interpreting Function Notation

4.16.1 Interpreting Function Notation

4.16.1 • Interpreting Function Notation

Warm Up

Consider the function ff given by f(n)=3n−7f(n)=3n−7. This function takes an input, multiplies it by 3, and then subtracts 7.

Evaluate.

1.

f ( 10 ) f ( 10 )

Compare your answer:

23

2.

f ( 10 ) − 1 f ( 10 ) − 1

Compare your answer:

22

3.

f ( 10 − 1 ) f ( 10 − 1 )

Compare your answer:

20

4.

f ( 5 ) − f ( 4 ) f ( 5 ) − f ( 4 )

Compare your answer:

3