David has $500 to buy CDs and DVDs. CDs cost $12 and DVDs cost $20. Which of these is a combination of CDs and DVDs that David can buy? (A) 5 CDs, 25 DVDs
(B) 10 CDs, 20 DVDs
(C) 15 CDs, 15 DVDs
(D) 35 CDs, 5 DVDs

The angles below are supplementary. what is the value of x? a pair of supplementary angles is shown. one angle measures 7x + 33, and the other angle measures 70. 5.3 8.14 11 14.7

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

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)) =