Respostas

  • Usuário do Brainly
2013-05-31T21:48:37-03:00

Temos que:

 

\text{f}(\text{x})=3\text{x}+5

 

Desta maneira, podemos afirmar que:

 

 

a) \text{f}(0)=3\cdot0+5=5

 

 

b) \text{f}(5)=3\cdot5+5=20

 

 

c) 3\text{x}+5=8

 

\text{x}=\dfrac{8-5}{3}=1

 

 

d) 3\text{x}+5=10

 

\text{x}=\dfrac{10-5}{3}=\dfrac{5}{3}

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