Propane Tanks For Home Heating

propane tanks for home heating

propane tanks for home heating
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math problem!! help plz?

over a 30 day period , the anount of propane in a tank that stores propane for heating a home decreases from 400 gallons to 214 gallons . what is the average rate of change in the amount of propance?
a.-6.2 gallons per day
b.-6 gallons per day
c.-0.16 gallons per day
d. 6 gallons per day

It’s (final amount – initial amount) / time
= (214-400)/30
= -186/30
= -6.2

so it’s choice (a).

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