Need help fast! Determine whether the equation represents a direct variation. If it does, find the constant of variation.
7x + 2y = 0
A. Yes; k= 7/2
B. Yes; k= 2
C. Yes; k= -7/2
D. No

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What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3

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)) =