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

No.

Why would you subtract?

If one gallon costs 1.45, what does 2 gallons cost? How do you know?

Two gallons cost $2.90. You have to add

thats a good response

The algebraic expression to represent the cost of m gallons of gasoline, where each gallon costs $1.45, would be:

C = 1.45m

In this expression, C represents the cost and m represents the number of gallons. To arrive at this expression, you multiply the cost per gallon ($1.45) by the number of gallons (m).