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find the value of f(3), if f ( x ) = 3 ...

find the value of f(3), if f ( x ) = 3 x − 4 ?

A

a. `(21)/(16)`

B

b. 5

C

c. 8

D

d. none of these

Text Solution

AI Generated Solution

The correct Answer is:
To find the value of \( f(3) \) for the function \( f(x) = 3x - 4 \), follow these steps: ### Step-by-Step Solution: 1. **Identify the function**: We are given the function \( f(x) = 3x - 4 \). 2. **Substitute the value of \( x \)**: We need to find \( f(3) \). This means we will substitute \( x \) with 3 in the function. \[ f(3) = 3(3) - 4 \] 3. **Perform the multiplication**: Calculate \( 3 \times 3 \). \[ 3(3) = 9 \] 4. **Subtract 4 from the result**: Now, subtract 4 from 9. \[ 9 - 4 = 5 \] 5. **Final result**: Therefore, the value of \( f(3) \) is 5. \[ f(3) = 5 \]
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