Answer:

1. set price x, revenue y

y=[(14-x). 1000+9500]. x

2. y=[14000-1000 x 9500]x

=-1000x²+23500x

3. y=-1000x(x&23.5)

when y=0, x=0 or x=23.5

so when price is p 23.5 , no revenue

4. x= - 23500/-100 x 2

= 11.75

y=-1000 x 11.75²+23500 x 11.75

= 138062.5

Step-by-step explanation:

hope it helps