Which of these is an example of a non-random sample?
a.
sunbathers at a free suntan lotion booth on a popular beach were asked about their favorite suntan lotion.

b.
at a free concert on the beach, five people are chosen to receive free music downloads.

c.
twenty customers at a theme park are chosen to receive one free admission on the next visit.

d.
people on a beach boardwalk are surveyed to determine if they have a full-time job.

Someone answer this asap rn 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)) =