Question

If f(x)=2x-5 and g(x)=7x-8, what is the value of (g ∘ f)(-3)? In other notation, what is the value of g(f(-3))? *

Answer 1

Answer:

$f(x)=2x-5 \\ g(x)=7x-8 \\ (gof)( - 3) = g(f( - 3)) \\ = g(2 \times ( - 3) - 5) \\ = g( - 6 - 5) \\ = g( - 11) \\ = 7 \times ( - 11) - 8 \\ = - 77 - 8 \\ = - 85$

Answer 2

Answer:

-85.............................