Posted by Gio on Wednesday, November 14, 2012 at 10:52pm.
Write an algebraic expression to represent the cost of m gallons of gasoline if each gallon costs $1.45
Is this right M$1.45

Math  Ms. Sue, Wednesday, November 14, 2012 at 10:56pm
No.
Why would you subtract?
If one gallon costs 1.45, what does 2 gallons cost? How do you know?

math  Gio, Wednesday, November 14, 2012 at 11:27pm
Two gallons cost $2.90. You have to add
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