The sum of the digits of a 2-digit number is 12. When the digits are reversed, the resulting number is 18 less than the original number. What is the original number?

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be

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)) =