A city bus uses 5 galloms of gas every hour for 6 hours let -5 represent the change in gas every hour. Which expression represents the total change in gas after 6 hours

Step-by-step explanation:

The change in gas is the substraction of the used gas to the initial amount of gas in the bus:

where is the initial amount gas in gallons, and is the used gas, also in gallons.

The bus uses 5 gallons every hour for six hours, so the gas used is in those 6 hours is:

substituting this into the expression for the total change in gas

the total change after 6 hours is:

since we don't know the initial amount of Gas we just leave it indicated in the expression.

(x, y)→(x − 8, y − 7)

step-by-step explanation:

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