For question 5-8, decide if the set is well-defined or not, and exlain your reasoning. Use the roster method. You may have to do a little Internet reearch. 5. The set of all Americans.
6. The set of all lawyers in Alaska.
7. The set of luxury cars in the 2017 in the model year.
8. The set of all mothers..

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)) =

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

The rectangle shown has a perimeter of 108 cm and the given area. its length is 6 more than five times its width. write and solve a system of equations to find the dimensions of the rectangle.