Albert is organizing an end of term party. the cost of renting a hall for an evening is $100. the cost of food is $8 per person. how much will the party cost if 20 people attend? 50 people attend? write an algebraic expression for the cost of the party if n people attend. suppose albert decides to hire a dj for the party. the dj charges $250 for the evening. what is the new cost of the party when n people attend? suppose the cost of food increases by $2 per person. write an expression for the total cost of the party with a dj for n people. the new food price is in effect. how much will the party with a dj cost for 40 people? show your work.