PLEASE HELP THANK YOU An 18-quart cooling system is checked and found to be filled with a solution that is 40% antifreeze.
The desired strength of the solution is 60% antifreeze.
How many quarts of solution need to be drained and replaced with pure antifreeze to reach the desired strength?

Astudent simplified a rational expression as shown.

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

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)) =