Write four solutions for each of the following equations: (i) 2x + y = 7
(ii) πx + y = 9
(iii) x = 4y

Fast please, tomorrow I have exam​

The verbal translation for the difference of m and 7 increased by 15

Which expression gives you the distance between the points (5,1)and(9,-6)

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)) =