How much does Marie have to pay for 3 cookbooks, each sold at $9.50?

To determine the total cost for Marie when purchasing 3 cookbooks priced at $9.50 each, you need to perform a multiplication of the price per cookbook by the number of cookbooks.

Calculating this, you would multiply:

3 cookbooks × $9.50 = $28.50.

This shows that if each cookbook costs $9.50, buying three of them amounts to $28.50. Hence, the correct answer reflects this calculation accurately.

The other choices represent amounts that do not correspond with the calculation required for this scenario, either being too low or too high compared to the total cost of three cookbooks at the specified price.