Urgent answer (nth term), 15 points + brainliest (fibonacci sequence , algebra, simple) *show working out *

a) 1 1 2 3 5 8 13 21 34

So, nineth term is 34

b) a+2b+2a+3b=3a+5b

c) a= 3 b= 4

Work is on attachment.

Hope this helped!

step-by-step explanation:

left be aligning the decimal points is required to not required see the number of digits to the right

the answer is 1030 it's very simple math.