Final answer:
To find the cost of 7 notebooks, divide the total price by the number of notebooks (3 for $2.44). Multiply the cost per notebook by the number of notebooks needed (7) to get the total cost of approximately $5.69.
Step-by-step explanation:
To find the total cost of the notebooks, we need to determine the cost per notebook and then multiply by the number of notebooks needed. Since the school store sells 3 notebooks for $2.44, we can find the price per notebook by dividing the total price by the number of notebooks: $2.44 / 3 = $0.8133. Therefore, the cost of a single notebook is $0.8133.
Next, we can calculate the total cost for 7 notebooks by multiplying the cost per notebook by the number of notebooks needed: $0.8133 × 7 = $5.6931.
So, Adam will be charged approximately $5.69 for 7 notebooks.