Consider the following system of equations. -10x^2-10y^2=-300
5x^2+5y^2=150

Which statement describes why the system has infinite solutions?
A. The equations represent parabolas that result in graphs that do not intersect.
B. The equations represent circles that result in graphs that do not intersect.
C. The equations represent parabolas that result in the same graph.
D. The equations represent circles that result in the same graph.

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)) =