Given the following matrices, find 3a - 2b. (hint: find 3a and 2b first and then subtract.)

a = 1 3
5 2
b = 4 9
0 3
c = 5 -2 1
0 -8 6
-4 4 -4

d = -1 2 1
6 -6 4
2 -8 3

a. -5 -9
15 0
b. 3 9
15 6
c. 11 27
15 12
d. not possible

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)) =