Answer: 787.5
Explanation:
The slope/rate of change would be 8.75 because EACH person is charged $8.75. The y-intercept would be 350 because even if there are 0 people who come to the party, you would still have to pay 350 for renting the room.
So let's make this into an equation-
y= 8.75x + 350 would be the equation. 8.75 is the slope and 350 is the y-intercept.
Now let's solve it!
y= mx+b here's the formula
y= 8.75x + 350 here's our equation
y= 8.75(50) + 350 substitute x for 50
y= 437.5 + 350 multiply 8.75 and 50
y= 787.5 add the numbers together
Our answer is y=787.5!
I hope that helped you! :-)