Anna wants to celebrate her birthday by eating pizza with her friends for $ 42.50 total ,they can buy p boxes of pizza each boxes of pizza cost $8.50

1. Anna has $42.50 to pay for pizza.

She will buy an unknown number of pizzas, which we are calling p.

Each pizza costs $8.50.

2. To find the total number of pizzas that Anna can buy, we can take the amount that she has to spend and divide it by the cost of each pizza.

3. The following equation matches this situation:

           42.5 / 8.5 = p