F(x) = 4x^2+ 7x – 18
f(-9)
       
      
                
     
    
    
    
    
    1 answer:
            
              
              
                
                
Answer:
f(-9) = 243
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
f(x) = 4x² + 7x - 18
f(-9) is x = -9
<u>Step 2: Evaluate</u>
- Substitute in <em>x</em>:                                                                                                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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