Answer:
Donna will have to pay $67.985125 at the register, including the 7% sales tax.
Step-by-step explanation:
Donna bought 3 pairs of pants for $28.50 each.
So, the cost for 3 pair of pants [tex]=(28.50\times 3)dollars= 85.50[/tex] dollars.
She also bought a necklace for $12.25
Thus, the cost for her entire purchase will be: [tex](85.50+12.25) dollars = 97.75[/tex] dollars.
She received a discount of 35% off her entire purchase. So, the amount of discount [tex]=(97.75\times 0.35)= 34.2125[/tex] dollars.
Thus, the total selling price will be: [tex](97.75-34.2125)= 63.5375[/tex] dollars.
Percentage of sales tax is 7%. So, the amount of sales tax [tex]=(63.5375\times 0.07)= 4.447625[/tex] dollars.
Thus, the total amount Donna have to pay at the register [tex]=(63.5375+4.447625)=67.985125[/tex] dollars.