I need help please answer quickly (25 points)

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer