Kiana is staying on the 5th floor of a hotel. she rode an elevator down 7 floors from her room to the parking garage to get her backpack out of her car. then she rode the elevator back up 2 floors to the hotel lobby.

which of the following expressions represent this real-word situation? check all that apply.

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Someone answer this asap rn for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =