1. graph the six terms of a finite series where a1 = 5 and r = 1.25.

Step-by-step explanation:

This series is in Geometric Progression, with initial term, a₁, as 5 and common ratio, r, as 1.25

Geometric growth can be represent by exponential growth function. Exponential growth for this scenario will be,

Putting values of n, we get the series as

So the points on the graph will be,

The graph is attached below.

answer: -8.2562234e+13