A building supply company requires at least 30 pallets of brick weighing 900 pounds each and at least 20 pallets of roofing material each weighing 650 pounds in order to make a delivery. The company's shipping trucks have a load capacity of 34,000 pounds. Express these restrictions with a system of inequalities. Make sure you define your variables. Problem 11. What is the effective interest rate of 8.1% interest compounded monthly? Show how you calculated your answer. Problem 12. If you wanted to estimate the probability that a household in Winona has a Roku hooked up to at least one of the TVs in the house describe what data you would need to collect in order to estimate that probability.