It seems you're working with two functions $f(x) = -3x + 10$ and $g(x) = x^2 - 7x$, and you want to find some additional information based on these. Could you specify what you would like to find, such as compositions, sums, differences, or other operations between $f(x)$ and $g(x)$? Here are some examples of common requests:

1. $(f + g)(x)$ — the sum of the functions.
2. $(f - g)(x)$ — the difference of the functions.
3. $(f \circ g)(x)$ — the composition of $f$ and $g$.
4. $(g \circ f)(x)$ — the composition of $g$ and $f$.
5. Solving $f(x) = g(x)$.

Let me know which operation or problem you'd like to solve, and I'll assist you with that!