please answer this question and thank you for your help

2. [30 marks] Fran Farnsworth travels throughout the Maritimes selling a line of three health care products. Each box of Flex costs $3 from her supplier, takes Fran 10 minutes ( on average) to sell, costs $0.50 to deliver, and contributes $2 to Fran's commission. Each box of Feelgood costs $5, takes 20 minutes to sell, is left with the customer at the time of sale, and contributes $4 to Fran's commission. Each box of Firmup costs $4, takes 12 minutes to sell, costs $1 to deliver, and contributes $3 to Fran's commission. Every week Fran is allowed to draw up to $1500 worth of products, and has a weekly delivery expense allowance of $85. Due to travel time and other commitments, Fran is limited to 40 hours, or 2400 minutes, per week for sales. Suppose x, y, & z represent the number of boxes to sell per week of Flex, Feelgood and Firmup, respectively and C is Fran's weekly commissions. The LP model and the corresponding sensitivity report are as follows: Maximize C =2x+ 4y+3: S.t. 3x +5y +4: $1500 (Worth of products , in dollars) 10x + 20y +12: