-2n(5 + n - 8 - 3n)
-10n - 2n² + 16n + 6n²
4n² + 6n
The formula is
I=prt
I interest earned?
P principle 1295
R interest rate 0.07
T time 180/365
I=1,295×0.07×(180÷365)
I=44.70
Let the length of the guy wire be x feet.
cos 51.8 = 400/x
x = 400/cos 51.8 = 646.82 feet.
The answer is 646.82 feet.