This is a geometric sequence with first term 2 and common ratio 5.
an = a1 r^(n-1) IS THE GENERAL FORM SO HERE IT IS:-
an = 2(5)^(n-1)
Answer:
B 405
(=20*9 + 25*9)
what are the blue-ish dots on your screen? :|
Answer is quantom physics cant equate to the sum of the x