Free points guys.. :)

When only separate discreet points are graphed it is called?

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

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?