Two utility companies sell electricity in units of kllowatt

Two utility companies sell electricity in units of kllowatt hours.The cost of electricity for company P is shown in the table. The cost of electricity for company M can be found by using the equation shown where y represents the total cost m dollars for x kilowatt -hours of electricity. Use the information provided to find the unit rate indollers per kellowatt-hour for each company Show your wort or explain your answers. Paid the total cost, in dollars or buying 2.375 kellowatt-hours of electricity from the least expensive company Entar you answers and you work or explination in the box provided

Solution

company M

cost of buying 2375 kwh of electricity = 2375* 0.15 = 356.25

if company P do not sell elcetricty less than 1250 units ,then

cost would be 2*150 = 300 { 1250*2 =2500 >2375}

then P would be the least expensive company and cost would be 300

now if company P sell elcetricty less than 1250 units ,then   

cost would be 196 + (2375-1650) *150/1250 = 283

P would be the least expensive company and cost would be 283