<prompt> Calculate the total cost for the given inputs.Price per item: 7.50Quantity: 3Tax rate: 10  <response>: The total cost for your purchase can be calculated as follows:Subtotal Price per item Quantity Subtotal 7.50 3Subtotal 22.50Sales tax Subtotal Tax rate Sales tax 22.50 10Sales tax 2.25Total cost Subtotal Sales tax Total cost 22.50 2.25Total cost 24.75Therefore, you will have to pay 24.75 for your purchase of 3 items at 7.50 each with a 10 tax rate. 