Let f(x) = 2x - 3and g(f(x)) = 5 - 4x. Find g(4)

Answer 1

To find g(4), we first need to find f(4):

f(x) = 2x - 3
f(4) = 2(4) - 3
f(4) = 8 - 3
f(4) = 5

Now, we substitute f(4) into g(f(x)):

g(f(x)) = 5 - 4x
g(4) = 5 - 4(5)
g(4) = 5 - 20
g(4) = -15

Therefore, g(4) = -15.