Respostas

2014-05-15T14:45:31-03:00
An = a1 + (n - 1) * r
4.498 = 4.002 + (n - 1) * 6
4.498 = 4.002 + 6n - 6
4.498 - 4.002 + 6 = 6n
502 = 6n
n =  \frac{502}{6}

n = aproximadamente 84.