Find an exact value
Sin19pi/12

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.

i think you would have to divide the money he had saved, which is $2,000 by the time he plans on exercising which is 40 hours, and the answer you get should tell you the answer to your question.