\[ f'(4) = 22 \]
![\[ f'(4) = 22 \]](https://soloferat.biz.id/images/f4--22-.jpg)
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- Now, evaluate \( f'(x) \) at \( x = 4 \):
- \[ f'(4) = 6(4) - 2 \]
- \[ f'(4) = 24 - 2 \]
- Thus, the value of \( f'(x) \) at \( x = 4 \) is 22.
- A sphere has a surface area of \( 144\pi \) square units. What is the radius of the sphere? Use the formula \( A = 4\pi r^2 \).
- The surface area \( A \) of a sphere is given by the formula:
