Let 0.25x is the price increase. Therefore, the number of attendees will be 350-10x and the revenue R=(350-10x)*(5+0.25x)=1750+37.5x-2.5x^2. This parabola has maximum at x=10, meaning the price=7.5
Choice B would be the correct answer. I hope that helps! :D
Answer:
2
Step-by-step explanation:
6x=4+8
6x=12x= 12/6
x=2
