Makayla works at an electronics store as a salesperson. Makayla earns a 4% commission on the total dollar amount of all phone sales she makes, and earns a 3% commission on all computer sales. How much money would Makayla earn in commission on a day that she sold $1400 worth of phones and $800 worth of computers? How much money would Makayla earn in commission on a day that she sold $ p p worth of phones and $ c c worth of computers?