The following data is provided: Week Number of Orders per week | 415 Weekly Total Costs $26,900 $27,200 $24,700 $25,200 $27,995 $25,900 $27,000 $28,315 $26,425 $25,750 360 1420 460 380 350 Complete the following. Show your work for full credit: 1. Using the high-low method, determine a cost equation. 2. The company expects to have 405 orders during week 11. Using the cost equation from #1 (high-low method), what are the expected weekly total costs for week 11? 3. The data above results in a regression equation as follows: Weekly total costs = $18,791 + (19.97 * Number of orders per week) Using the above regression equation, what is the estimated weekly total costs for week 11 if the company expects to have 405 orders