The answer is 280, but I keep getting 285 and i dont know what to do

Broker Shader. Stock broker Susan Shader has made the following recommendations to her client: The client agrees to this list but provides several conditions: (1) no more than $3,000 can be invested, (2) the money is to be spread among at least five investments, (3) no more than one type of bond can be purchased, (4) at least two utility stocks and at least two regular stocks must be purchased, (5) if Hanover is purchased, then Samuels must be purchased. Formulate this problem for Ms. Shader to maximize expected return, assuming that only one unit of each investment can be purchased. Solve using Excel and Solver