A. -f(1)=1,f(2)=2,f(n)=2f(n-1)f(n-2);n>2
I have 81¥ and I'm going to the US, so I need to convert my Yen into US Dollars, if i get 1 USD (US Dollar) for every 9¥, how many USD will i have if i convert all of my Yen?
1 person = 130 + (60x7) + 350 = 900
4 people = 4 x 900 = 3600
I think this is right !
In this question, some of the data is missing so its a complete question and the solution can be defined as follows:

By given question, calculating equations are:

Putting the equation (c) value in the equation (a) to calculate value:

Putting equation (c) and (d) value into equation (b):
Putting m value into equation (c) and equation (d) to calculate its value:
Calculating the s value:
Calculating the r value:
So, the final value of "m, s, and r" are "900, 1800, and 5800".
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brainly.com/question/2929577
Solving equations simple
9n + 12 = 30