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F (x) = x^2 + 4x; Find f (−7)
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3 votes
F (x) = x^2 + 4x; Find f (−7)

User Reaanb
by
3.7k points

1 Answer

5 votes

Answer:

f(-7) = 21

General Formulas and Concepts:

Pre-Alg

  • Order of Operations: BPEMDAS

Explanation:

Step 1: Define

f(x) = x² + 4x

f(-7) is x = -7

Step 2: Solve

  1. Substitute: f(-7) = (-7)² + 4(-7)
  2. Evaluate: f(-7) = 49 + 4(-7)
  3. Multiply: f(-7) = 49 - 28
  4. Subtract: f(-7) = 21
User Hasina
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