Band students going to a competition can get a special hotel rate of $90 per room. They have a parent donation of $310 to help with the cost.

They have a budget of $2800. Write an equation and use it to find the number of rooms they can purchase.



a
2800=90r+310; 27 rooms
b
3110=90r; 35 rooms
c
3110=90r; 34 rooms
d
2800=90r+310; 28 rooms