A function is defined by f(x)= 6x+1.5. What is f(2.5)?

f(2.5) = 16.5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

FunctionsFunction Notation

Explanation:

Step 1: Define

Identify

[Function] f(x) = 6x + 1.5

[Given] f(2.5) is x = 2.5 for function f(x)

Step 2: Evaluate

Substitute in x [Function f(x)]:                                                                           f(2.5) = 6(2.5) + 1.5Multiply:                                                                                                             f(2.5) = 15 + 1.5Add:                                                                                                                   f(2.5) = 16.5

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