Umake it is having a 20% off your entire purchase sale. rebecca is buying 6 skeins of yarn. each skein costs $3.95. the tax on her purchase will be 8%. which expression can rebecca use to find the total cost, including tax? a) .80[6(3.95)] + .08(3.95) b) .80[6(3.95)] + .08[6(3.95)] c) .80[(6)(8)(3.95)] d) 1.08[.80(6)(3.95)]