Respostas

2014-07-15T08:10:56-03:00
F(x)=3x/5-7/4
f(x)=(12x-35)/20
Calculo de f(15) e f(10):
f(15)=(12*15-35)/20
f(15)=7,25
f(10)=(3*12-35)/20
f(10)=1/20
Logo:
f(15)-f(10)/5=(7,25-1/20)/5=(145-1/20)/5=144/100=1,44
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