The national weather service keeps track of the temperature for a given day in a given city. it also keeps track of this information at certain times during a given day. the following temperatures were recorded on a january day in new york city. time of day 10 am 12 noon 2 pm 4 pm 6 pm 8 pm 10 pm temperature 30 35 36 36 34 30 28 over which period(s) of time is the average rate of change zero? what, if anything, can you conclude about the actual temperature fluctuation within this period? a. the ave

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)) =