To find the profit function, we need to subtract the cost function \( h(x) \) from the revenue function \( k(x) \). The profit is given by:
\[ P(x) = k(x) - h(x) \]
Given the functions:
- Cost function: \( h(x) = 5x + 6 \)
- Revenue function: \( k(x) = 9x - 2 \)
We can substitute these functions into the profit equation:
\[ P(x) = (9x - 2) - (5x + 6) \]
Now, simplify the expression:
\[ P(x) = 9x - 2 - 5x - 6 \]
Combining like terms:
\[ P(x) = (9x - 5x) + (-2 - 6) \] \[ P(x) = 4x - 8 \]
So, the expression that represents the profit \( (k - h)(x) \) is:
\[ \boxed{4x - 8} \]