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you have the option to rent a snow plow for $20 and then $4 per hour for pay your neighbor Kevin $8 per hour how many hours will be required in order to have the cost be the same which will be the least expensive if it only takes 3 hours to clear the driveway

Respuesta :

marioedwards56

Answer:

5 hours for it to cost the same. Paying Kevin would be least expensive

Step-by-step explanation:

8x = 4x + 20  set equation equal to each other

8x-4x = 20  put all x on one side of equal sign

4x = 20  

x = 20/4  divide both sides by 4 to get x alone

x = 5

test it out

8(5) = 40

4(5) + 20 = 40

Therefore they are equal

if it only takes 3 hours set up equation and check costs                

Kevin rate = 8 * 3 = 24

Rent snow plow = 20 + 4(3) = 32

Therefore Kevin would be cheaper/ least expensive

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