Katya has $20.00 to spend at her college bookstore, where all students receive a 20% discount. Katya wants to purchase a copy of a book that normally sells for $22.50 plus 10% sales tax. Does Katya have enough money? By how much or how little?

If you draw a card with a value of three or less from a standard deck of cards, i will pay you $43. if not, you pay me $11. (aces are considered the highest card in the deck.) step 1 of 2 : find the expected value of the proposition. round your answer to two decimal places. losses must be expressed as negative values.