amelia pays $11.31 in sales tax on a new sewing machine that costs $150.75. how much sales tax does amelia pay per dollar for the price of the new sewing machine. round the answer to the nearest thousandth

To find the sales tax per dollar, divide the total sales tax by the price of the sewing machine:

11.31 / 150.75 = 0.075

Rounded to the nearest thousandth, Amelia pays 0.075 per dollar in sales tax for the price of the new sewing machine.