Ahallway measuring 90 feet x 7 feet requires 1/2 a fluid ounce of cleaning solution per square foot. how much cleaning solution is required to clean the hallway

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.