Helmer's Rockers manufactures two models, Standard and Premium. Weekly demand is estimated to be 100 units of the Standard Model and 70 units of the Premium Model. There are only 496 machine hours available each week. The following per unit data apply: Standard Contribution margin per unit $18 Number of machine-hours required 3 Premium $20 4 1) Is this a constrained environment? 2) What is the contribution margin per constraint for each product? 3) How many of each product should Helmer's make to maximize profits. What is the maximum profit available