Question

given f(x)=x^2+7 and g(x)=(x-4)/x
find (g*f)(-1)

Answer 1

plug in -1 into both expressions
evaluate
then multiply the results

Answer 2

f(-1)=-1^2+7 g(-1)=(-1-4)/-1?

Answer 3

f(-1)=(-1)^2+7
g(-1)=(-1-4)/(-1)

so I made one correct to f(-1) expression thing
anyways you need to evaluate both (-1)^2+7 and (-1-4)/(-1)

Answer 4

and then multiply the results

Answer 5

6 and 5?

Answer 6

so is it 30?

Answer 7

sometimes \[( f * g)(x) \equiv f (g(x)) \]

Answer 8

so I got 29=-30