80% of the ppl own house, 50% ppl who own house have carpet. 60% of the ppl buys foaming carpet cleaner own house, how many ppl own house & buy carpet

Which of the following expressions is equal to 2x^2+8

Anew shopping mall is gaining in popularity. every day since it opened, the number of shoppers is 5% more than the number of shoppers the day before. the total number of shoppers over the first 10 days is 1258 how many shoppers were on the first day?

Ok a point t on a segment with endpoints d(1, 4) and f(7, 1) partitions the segment in a 2: 1 ratio. find t. you must show all work to receive credit.