Kelsey decided to bake blackberry pies to sell at the county fair. She had $100 in her savings account. She spent $75 of her savings buying all the ingredients. At the fair, she sold 15 pies and charged $9 per pie. She took the money she earned from the fair and added it to her savings account. How much money is in Kelsey's savings account now?

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle