X = monthly rent
x + 1.5x = 3275
2.5x = 3275
x = 3275/2.5
x = 1310 <== rent
1.5(1310) = 1965 -- security deposit
check...
1310 + 1965 = 3275
3275 = 3275 (correct)
so his monthly rent is : $ 1310
Use the formula (n - 2) * 180 to find the sum of the interior measures of a polygon.
n stands for the number of sides that the polygon has, so substitute 10 for n since a decagon has 10 sides.
(10 - 2) * 180, start by solving inside the parentheses and subtracting 10 and 2.
(8) * 180, multiply.
B. 1,440 is your answer.
W = 17/13.
I hope this helps. I'm pretty sure I got it wrong, but just let me know.
