Elena and Matthew are president and vice-president of their ninth-grade class at Riverside High School. They have suggested that the school sponsor a dance to raise money for the victims of a recent hurricane. The expenses for the dance will be $250 for the DJ and $100 for the refreshments. Tickets will cost $5 a person. How many tickets must be sold in order to raise $1,000 after expenses?
I need the right answer
A.250
B.270
C.350
D.420