Question

49 - somente A / B
50 - somente A / C / E / F​

Answer 1

49 a)

f(5)= 3×5 -5 = 10

b)

f(f(5)) = 3(3×5 -5) -5 = 25

c)

f(f(f(5))) = 3[3(3×5 -5) -5] -5 = 70

50 a)

f(g(x)) = 5(x²+4x) -8 = 5x² + 4x -8

c)

f(h(x)) = 5 ($\frac{2}{x-3}$) -8 =  $\frac{10}{x-3}$ -8 = $\frac{34 -8x}{x-3}$

e)

g(f(x)) = (5x-8)² + 4(5x-8) = 25x² -40x +64 +20x -32 = 25x² -20x +32

f)

f(f(x)) =5(5x-8) -8 = 25x -40 -8 = 25x -48