What is the derivative of f(x) = 7x^2 + 8x + 5?
- A. 14x^2 + 8
- B. 14x^1
- C. 14x + 8 ✓
- D. 7x^1 + 8
Correct answer
C. 14x + 8
Explanation
Using the power rule, the derivative of 7x^2 is 14x^1, the derivative of 8x is 8, and the derivative of the constant 5 is 0. So f'(x) = 14x + 8.