The graph shows the relationship between the total cost and the number of gift cards that raj bought for raffle prizes.

a graph titled cost of gift cards. the x-axis shows the number of gift cards, numbered 1 to 9, and the y-axis shows the total cost in dollars, numbered 10 to 90. blue diamonds appear at points (1, 20), (2, 40), (3, 60), (4, 80).
what would be the cost for 5 of the gift cards?

for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

Compare the cost of the bike trips from the two companies shown.for both the cost in a linear function of the number of days which statements is true

Which statement best explains why ben uses the width hi to create the arc at j from point k

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)) =