An infinite geometric series has common ratio -1/5 and sum 16. What is the first term of the series?
\(\text{Let }a\text{ be the first term.}\\ \dfrac{a}{1 - \dfrac{-1}{5}}= 16\\ a = 16\left(\dfrac{6}{5}\right) = \dfrac{96}{5}\)
The first term of the series is 96/5
