Aband has been playing weekly at local venue.
they have been making a fixed amount, plus they receive additional money for every ticket sold.
last week they sold 40 tickets and were paid $200.
the week before that they sold 70 tickets and were paid $260.
let a represent the number of tickets sold and y represent the amount the band will be paid.
construct a linear function to represent the relationship between the number of tickets sold and the
amount the band will be paid.