Question

I need help w/ these Questions!!!

Answer 1

I’m not quite clear on the rule. Is the third one 600,000? And the 4th 800,000? Then it’s a simple arithmetic series.

Answer 2

it's not an exponent.  You would multiply, the second is 200,000 x 2, the third 200,000 x 3, etc.

Answer 3

This is an arithmetic progression

Starting term 'a' = 200,000

Common difference 'd' = 200,000

n = 54

nth term = a + (n-1)d

Sum of the first n terms = n/2 × (2a + (n-1)d)