Question

Dadas as funções f(x) = −5x + 15 e g(x) = 4x calcule:
a) f(-7) = b) g(2/4) c) f(1/2)

PRECISO URGENTE! ALGUÉM ME AJUDA

Answer 1

Resposta:

a) 50

b) 2

c) $\frac{25}{2}$

Explicação Passo-a-passo:

a) f(-7) = -5 × -7 + 15

f(-7) = 35 + 15

f(-7) = 50

b)

$g( \frac{2}{4}) = 4 \times \frac{2}{4} \\ g ( \frac{2}{4}) = \frac{4}{1} \times \frac{2}{4} \\ g( \frac{2}{4}) = \frac{4 \times 2}{4} \\ g( \frac{2}{4}) = \frac{8}{4} \\ g( \frac{2}{4}) = 2$

c)

$f( \frac{1}{2} ) = - 5 \times \frac{1}{2} + 15 \\ f( \frac{1}{2} ) = \frac{ - 5}{2} + 15 \\ f( \frac{1}{2} ) = \frac{ - 5}{2} + \frac{15}{1} \\ f( \frac{1}{2} ) = \frac{ - 5 + 30}{2} \\ f( \frac{1}{2} ) = \frac{25}{2}$