The question I need help with is

Question

 "A company that manufactures hair ribbons knows that the number of ribons x it can sell each week is related to the price per ribbon p by the equation x=1,800,200p.  At what price should it sell the ribbon sif it wants the weekly revenue to be $4,000?"

Answer 1

"A company that manufactures hair ribbons knows that the number of ribons x it can sell each week is related to the price per ribbon p by the equation x=1,800,200p. At what price should it sell the ribbons if it wants the weekly revenue to be $4,000?"

Revenue =xp=4000
4000=1800200p ²
p=$.047