Question

Let f(x) = -3x - 4 and g(x) = 2x - 6. Find (f*g)(-7)

Answer 1

I'd be super grateful of a brief explanation too. I have no idea how to do this stuff

Answer 2

I think the best approach is to find (f*g)(x) first then plug in -7 essentially for (f*g)(x) all you're doing is multiplying as requested, \[(f*g)(x) \implies (-3x-4)(2x-6)\]

Answer 3

And then you can find (f*g)(-7) by plugging in the value and evaluating!