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3 years ago

F(x) = 4x^2+ 7x – 18 f(-9)

Mathematics

1 answer:

balandron [24]3 years ago

5 0

Answer:

f(-9) = 243

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = 4x² + 7x - 18

f(-9) is x = -9

Step 2: Evaluate

Substitute in x: f(-9) = 4(-9)² + 7(-9) - 18
Evaluate Exponents: f(-9) = 4(81) + 7(-9) - 18
Multiply: f(-9) = 324 - 63 - 18
Subtract: f(-9) = 261 - 18
Subtract: f(-9) = 243

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