Write the matrix equation as a system of linear equations without matrices. [Start 3 By 3 Matrix 1st Row 1st Column 1 2nd Column negative 2 3rd Column negative 4 2nd Row 1st Column 5 2nd Column negative 4 3rd Column 7 3rd Row 1st Column negative 7 2nd Column 5 3rd Column 2 EndMatrix ][Start 3 By 1 Matrix 1st Row 1st Column x 2nd Row 1st Column y 3rd Row 1st Column z EndMatrix ]equals [Start 3 By 1 Matrix 1st Row 1st Column 8 2nd Row 1st Column 5 3rd Row 1st Column negative 3 EndMatrix ]

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)) =

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

You work in a hospital that has 9 floors. you need to see 3 patients on each floor. how many patients do you need to see in all?