Why can 2 obtuse angles make a right triangle

Witch represents the inverse of the function f(x)=1/4x-12

Which of the following is an equation of a line parallel to the equation y=4x+1?

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