New balance
6,834.53−200+375+(6,634.53×0.202)
=8,349.70
Remember there are 3ft in a yard and 12in. in a foot.
To convert 5.5ft to yd, divide by 3.
To convert 2.5yd to ft, multiply by 3 to get 7.5ft.
To convert 7.5 ft to in, multiply by 12.
Just remember when converting to a larger quantity (yards, for example) to a small (feet, for example), you multiply, and from smaller quantity to larger, divide.
Assuming you mean

, which is the equation of a circle :
the general equation of a circle of radius

and center

is

hence here the center is
350000 = 270000(1.05)^n
1.05)^n = 350000/270000 = 1.296296
n = log 1.296296 / log 1.05 = 5.3 years answer