Respuesta :

Answer for 4 is 56 costumers
Answer for 30 is x+56=y-$5.05
  • Cover charge be x
  • Customers be y

So

For every increase in cover price of x means 5x+0.5 decreases customers by 30

So

the expression is

  • 5x+0.5=300y-30
  • 5x=300y-30.5
  • 300y=5x-30.5
  • 5x-300y-30.5=0