A prom dress originally priced at $450 is on sale for off the original price. In addition, Alia has a coupon for 10% off the discounted
price. If there is a 6% sales tax on the final price of the dress, what would Alia's total
cost be?

378

Step-by-step explanation:

Original price is $450

⇒$450→100%

and there is a sale of 6%

⇒X→94%

⇒the dress cost after 6% sale= X=(450×94)÷100=$423

But, Alia has 10% discount also

⇒$423→94%

Y→84%

⇒The final dress cost =Y=(423×84)÷94=$378

if you mean 6% is added to the dress as a tax:

Original price is $450

⇒$450→100%

⇒X→106%

⇒the dress cost after 6% tax= X=(450×106)÷100=$477

But, Alia has 10% discount also

⇒$477→100%

Y→90%

⇒The final dress cost =Y=(423×90)÷100=$429.3

typically if you want , you would actually put questions here for us to you. but hey, that's just me. maybe someone will magically answer the questions for you without knowing what they are.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads