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Given that f(x) = 4 x ^2 and g (x) =3-...

Given that `f(x) = 4 x ^2 and g (x) =3-(x)/(2)`, what is the value of `f(g(4))`?

A

1

B

4

C

8

D

16

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to find the value of \( f(g(4)) \) given the functions \( f(x) = 4x^2 \) and \( g(x) = 3 - \frac{x}{2} \). ### Step-by-Step Solution: 1. **Calculate \( g(4) \)**: \[ g(x) = 3 - \frac{x}{2} \] Substitute \( x = 4 \): \[ g(4) = 3 - \frac{4}{2} \] Simplifying this: \[ g(4) = 3 - 2 = 1 \] 2. **Calculate \( f(g(4)) \)**: We found that \( g(4) = 1 \), so now we need to find \( f(1) \): \[ f(x) = 4x^2 \] Substitute \( x = 1 \): \[ f(1) = 4 \times 1^2 \] Simplifying this: \[ f(1) = 4 \times 1 = 4 \] 3. **Final Result**: Therefore, the value of \( f(g(4)) \) is: \[ f(g(4)) = f(1) = 4 \] ### Conclusion: The final answer is \( 4 \).
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