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truck holds 30 gallons of gasoline. The cost filling the gas tank with respect to prices is modeled by equation T 30p where total up and p?

The given equation is T = 30p, where T represents the total cost of filling the gas tank and p represents the price of gasoline per gallon.

To find the total cost of filling the gas tank when the price of gasoline is $4 per gallon, we simply substitute p = 4 into the equation:

T = 30p

T = 30(4)

T = $120

Therefore, the total cost of filling the gas tank when the price of gasoline is $4 per gallon is $120.