Suppose the pool is 30 feet long and 20 feet wide. how many square tiles does the tiler need for the border

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Ill mark the brainliest if you me with the these three questions 7,8,9