Sabendo-se f( x ) = 5x -2, determine f(4)
a) 10
b) 14
c) 18
d) 20


Resposta :

f( x ) = 5x -2, determine f(4)

f(4) = 5 . 4 - 2

f(4) = 20 - 2

f(4) = 18

item: c)