Seth is participating in a fun run to raise money for the West Side Children's Hospital. The run is held at Seth's high school track. The more laps Seth runs around the track, the more money he

raises for the hospital.

There is a proportional relationship between the number of laps Seth runs, x, and the amount of

money he raises for the hospital (in dollars), y.

x (laps) y (dollars)

1

$5

2.

$10

3

$15

4

$20

What is the constant of proportionality? Write your answer as a whole number or decimal.

dollars per lap

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)) =