Sally and Mia run a furniture making company. They work together to build and paint custom dressers. Sally charges a $100 flat fee for each dresser she builds, plus $420 for each hour she spends building.

Mia charges a $150 flat fee for each dresser she paints, plus $390 for each hour she spends painting.

a) Represent what Sally charges for one dresser as a polynomial. Remember to define any variables!

b) Represent what Mia charges for one dresser as a polynomial. Remember to define any variables!

c) Write a new SIMPLIFIED polynomial that represents their total charges, together, for one dresser.