In order to solve for total sales, you first must solve for the amount of sales tax. Since she bought 3 yards of cloth, she bought [tex]2.25*3=$6.75[/tex] worth of cloth. Now to find the sales tax, multiply that value by [tex]0.05[/tex], which looks like [tex]6.75*0.05=0.34[/tex] (I'm rounding to the nearest cent). So to solve for the total cost, add those two values together. So the answer is [tex]6.75+0.34=$7.09[/tex], which is answer choice D.
