The graph models the linear relationship between the cost for hiring a cleaning company and the number of hours hired for two cleaning companies. based on the graph, which statement appears to be true? the cost for hiring a cleaning company for 4 hours is $20 less for company a than for company b. the cost for hiring a cleaning company for 4 hours is $20 greater for company a than for company b. the cost for hiring a cleaning company for 4 hours is $70 for both company a and company b. the cost for hiring a cleaning company for 4 hours cannot be determined for company a and company b. plz fast