Angle abc measures 30 degrees. it is rotated 90 degrees to create angle a’b’c’. what is the measure of angle a’b’c’?

a. 30 degrees

b. 90 degrees

c. 15 degrees

d. 60 degrees

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)) =

Having a hard time understanding this question (see attachment).

Which is the graph of the linear equation x – 2y = 6?