David can paint a room in 9 hours. David and Jenny can paint the same room together in 5 hours. Who could paint the room faster on their own and by how much time?

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Factor the expression using gcf 9b+45

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