Some engines require oil to be mixed with gasoline. for every gallon of gas used, 4 ounces of oil should be added. how much gas is needed if 12 ounces of oil are used?

You need 3 gallons of gas

Work Shown:

(1 gallon gas)/(4 oz of oil) = (x gallons of gas)/(12 oz of oil)

1/4 = x/12

1*12 = 4*x cross multiply

12 = 4x

4x = 12

4x/4 = 12/4 ... divide both sides by 4

x = 3 gallons of gas is needed

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)

step-by-step explanation:

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