Suppose a runner completes one lap around a 400-m track in a time of 50 s. calculate the magnitude of the average velocity of the runner.

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

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)) =

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error