S = 150m
This is because per month, m, they earn 150 dollars, and thus, the total, s, would be 150 times the months.
Answer:
see explanation
Step-by-step explanation:
The n th term of a geometric sequence is
= a₁
where a₁ is the first term and r the common ratio, hence
= 6 ×
= 6 × -
= 6 × -
= - 
Add by 4 on each side.
x=8