Suppose that the manufacturer of a gas clothes dryer has found that when the unit price is pdollars, the revenue R(in dollars) is Upper R left parenthesis p right parenthesis equals negative 2 p squared plus 6 comma 000 p.

R(p)=2p2+6,000p.

(a) At what prices p is revenuezero?

(b) For what range of prices will revenue exceed $800 comma 000

800,000?

(a) At what prices p is revenuezero?

The revenue equals zero when p is $ ______?