Respostas

2014-04-12T15:00:30-03:00
F(12) = 7.12 + 1 = 85
f(9) = 7.9 + 1 = 64

 \frac{f(12) - f(9)}{3} =  \frac{85 - 64}{3} =  \frac{21}{3} = 7
R = 7
2 5 2