What does the difference of two functions (f-g)(x) represent?

What does the product of two functions (f⋅g)(x)represent?

If f(x) = 9x + 2 and g(x) = x²– 10, find (f + g)(x).

Given f(x) = 5x−5 and g(x)=2x+3, find (f−g)(x).

If f(x) = 3x − 2 and g(x) = 2x + 1, find (f⋅g)(x).

If f(x) = x + 5 and g(x) = 3x − 2, find (f∘g)(x).

Given f(x) = 6x − 2 and g(x) = x²,evaluate (f − g)(3).

If f(x) = 5x − 3 and g(x) = x², the difference of the functions is (f – g)(x) = 5x – 3 – x². Evaluate  this expression for x = 3?

Given f(x) = x + 1 and g(x) = 2x − 4, the product of the functions is (f ⋅ g)(x) = 2x² - 2x – 4. Evaluate this expression for x = 2?