please solve quickly

Answer the following questions for the price-demand equation. p + 0.002x = 30 (A) Express the demand x as a function of the price p. x=D The domain of this function is E. (Type an inequality or a compound inequality.) (B) Find the elasticity of demand, E(p). E(p) = D (C) What is the elasticity of demand when p = 15? The elasticity of demand when p = 15 is E. (Type an integer or a simplied fraction.) If the price is increased by 10%, what is the approximate change in demand? The demand |:| approximately |:|%