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?

Hassan bought a package of tofu. the temperature of the tofu was 14° celsius when hassan put the package into the freezer. he left the tofu in the freezer until it reached –19° celsius. which expressions explain how to find the change in temperature, in degrees celsius, of the package of tofu? select three that apply.