Janelle wrote the matrix addition below. 3

-1

12

-5

1

-6

- 7

-1

-7

18

6

m-1 -9 +

0

0 4

-12 2 +

-18 8

4

0

3

10

12

-4

17

S+1

7

1

14 -11

5

32 -28 20

Which statement is true?

(1+4)- 7 = 18

((m-1)+12)+0 - 12

© ((S+1)-18)+11=-28

n+(m-1)+(5+1)=-28

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)) =