we can use
each interior angle formula of any regular polygons

where
n is number of sides
theta is angle
we are given

now, we can plug it

now, we can solve for n


so, option-C......Answer
$2,100 since she only finished 6 cabinets. I hope this helps you!
I believe it would be about 1.57
15, median is the number in the middle, (i.e. median of 3, 4, 8, 9, 10, is 8.)