First we need to do 26500+ 725 which equals 26325. Secondly we need to work out 6% of 26500, which is 1590. Now we have all the amounts, we need to add them together. 26325+1590=27915 and 26915+50= 26965. The total cost is $26965 .
The answer is D. All you have to do is add all of the angles for each choice you're given. It has to add up to exactly 180, because every triangle is 180 degrees.