Question

you are planning a class pizza party. the pizza delivery fee is $25. each pizza costs $12. the total cost is $205. let n = number of pizzas. write an equation showing the total cost. solve for n. write 1 - 2 sentences explaining what your answer means.

Explanation:

Step1: Write the equation

The total cost is the sum of the delivery fee and the cost of the pizzas. The delivery fee is a fixed cost of $25$, and the cost of the pizzas is $12n$ (since each pizza costs $12$ and there are $n$ pizzas). So the equation is $12n + 25=205$.

Step2: Solve for $n$

Subtract $25$ from both sides of the equation:
$$12n+25 - 25=205 - 25$$
$$12n=180$$
Divide both sides by $12$:
$$n=\frac{180}{12}=15$$

Answer:

The equation is $12n + 25 = 205$. Solving for $n$, we get $n = 15$. This means that 15 pizzas were ordered for the class pizza party.