Pamela is selling cookies. she charges 75 cents for each cookie, with the ingredients costing $2.00 per dozen. the cookies are only sold by the dozen. her profit is represented by the equation p = 7d. what does the domain of the function represent? which values in the domain are relevant to the amount of profit? a) profit per dozen; x ≥ 0.75 b) number of dozen sold; x ≥ 0 c) number of dozen sold; x ≥ 1 d) profit per cookie; x ≥ 0.75