You have $40 to spend on n gallons of gas that costs $3.25 per gallon. Determine whether each of the folloyis an expression or an equation. Using the structure, give an interpretation of the practical meaning of each

Here is the solution ...

You have $40 to spend "n" number of gallons of gas.

Each gallon of gas costs $3.25.

Total amount = 3.25 * the number of gallons.

Therefore, the equation 40 = 3.25n

Here the variable "n" represents the number of gallons that we can buy for $40.

The slope 3.25 represents the cost per gallon.