you find a vintage record at a garage sale for $12. you mark it up by 80% to sell it online. what will your customer pay for the record including 7% sales tax? (show work pls thanks)

Respuesta :

12 divided by 10 = $1.20 (8) = $9.60 + $0.84 = $ 10.44                                     12 divided by 100 = $0.12 (7) = $0.84