Which choice correctly expresses the number below in scientific notation? 0.0000000744
O A. 7.44.10-9
O B. 744 . 10-8
O C. 744 . 10-10
O D. 74.4 . 10-9
O E. 7.44- 107
F. 7.44.10-8

Someone answer asap 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)) =