Answer:
The equation for amount of money made by ticket sales is
![y=-(1)/(55)x+444.31818](https://img.qammunity.org/2020/formulas/mathematics/high-school/iey1js2gauzatm2ghcix82jk1fh3s90mbh.png)
Explanation:
We are given
An outdoor concert venue has an average of 22,650 attendees when the price per ticket is $32.50
so, at x=22650 , y=32.50
For every ticket price increase of $5 the number of attendees decreases by an average of 275
so, we get slope as
![m=(5)/(-275)](https://img.qammunity.org/2020/formulas/mathematics/high-school/sqrz9xb7z1s08l7zw2gm77j8nwmr3ic1e2.png)
![m=-(1)/(55)](https://img.qammunity.org/2020/formulas/mathematics/high-school/cg09379z6je6qqc8zr78hdult84pcn6ymr.png)
now, we can use slope intercept form of line
![y=mx+b](https://img.qammunity.org/2020/formulas/mathematics/high-school/8nudzfk4b5l0arb9iixag2w8am6zn99zlr.png)
we can plug it
![y=-(1)/(55)x+b](https://img.qammunity.org/2020/formulas/mathematics/high-school/rr4jy8im7bupbjkk0bbaf4f0sv99tai49j.png)
we can plug
x=22650 , y=32.50
and then we can find b
![32.50=-(1)/(55)* 22650+b](https://img.qammunity.org/2020/formulas/mathematics/high-school/c57by4lpcuvp5njqik0jaa6xp8no52eb71.png)
![b=444.31818](https://img.qammunity.org/2020/formulas/mathematics/high-school/emj519pn8cglxslgcsjue3p2xbbwh4u9ds.png)
now, we can plug it back
and we get
So, the equation for amount of money made by ticket sales is
![y=-(1)/(55)x+444.31818](https://img.qammunity.org/2020/formulas/mathematics/high-school/iey1js2gauzatm2ghcix82jk1fh3s90mbh.png)