Question 1 - Week 2 (8b) (7 marks) Star Limited, a management consultancy firm, has operating hours fluctuate from week to week. Its utilities costs and operating hours for the past six weeks are as follow: Week Operating Hours Utilities Cost ($) 1 42 630 2 55 705 3 37 427 4 33 485 5 39 552 6 41 637 Required: a) Use the high-low method to estimate the cost behaviour for the company's utilities costs, assuming that variable costs vary in proportion to the hours of operation. Express the cost behaviour in a cost function (Y = a + bx). b) Star Limited is expected to be operated for 45 hours in next week. Predict the company's total utilities cost for the week SHOW YOUR WORKING