Teresa eats in a resturaunt that charges 6% sales tax on the cost of a meal. teresa decides to leave a tip that equals 18% of the cost of her meal.
which expression represents the total amount teresa will pay for a meal, where x is the cost of her meal before the tax and tip?
a. x+x(0.06)+x(0.18)
b. x+(x+0.06)+(x+0.18)
c. x+(x-0.06)+(x-0.18)
d. x+x(1+0.06)+x(1+0.18)