A is incorrect answer

What is the total market supply, Qs, for laundry detergent in the United States if the only two suppliers inverse supply functions are P=5+Q51 and P=2+Q52 ? [Hint: Total Supply is the horizontal summation of all quantity supplied at a given price point.] A) P=3+2Qs B) Os=3+2p B) 957+2p b) Q:=2+(7P/15)