Answer:
The total amount you will spend is;
[tex]\text{\$}49.5[/tex]Explanation:
Given that Papa John's charges $12 for a pizza pie and $2.25 for each topping.
Let p represent the number of pizza pie and t represent the number of toppings.
The total cost will be;
[tex]C=12p+2.25t[/tex]If you bought 3 pizza pies and 6 toppings;
[tex]\begin{gathered} p=3 \\ t=6 \end{gathered}[/tex]Substituting;
[tex]\begin{gathered} C=12p+2.25t \\ C=12(3)+2.25(6) \\ C=49.5 \\ C=\text{\$}49.5 \end{gathered}[/tex]Therefore, the total amount you will spend is;
[tex]\text{\$}49.5[/tex]