What is an equation of the line that passes through the points (-5, -7) and (5, 1)

What is the value of x in the diagram below?

Answer for 10 points show work you guys in advanced < 3

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