help please!

A company makes four different products, A, B, C, D. Each requires time on three different machines and each machine has a limited time. Rolling has 28 hours, cutting has 34 hours, and welding has 21 hours. The table lists the time for each machine and profit. A B C D Rolling Machine 1.7 2.1 1.4 2.4 Cutting Machine 1.1 2.5 1.7 Welding Machine 2.6 1.6 1.3 1.6 Profit 0.8 26 35 25 37 a) What is Standard Format for this problem? b) What is the production mix and what is the profit? c) What is the reduced cost of product A? What does this mean? d) What is the shadow price on the Rolling Machine? What does this mean