Katie and Margarita have $20.00 each to spend at Student Choice bookstore, where all students receive a 20% discount. They both want to purchase a copy of the same book
which normally sells for $22.50 plus 10% sales tax.
Write an expression to find the total cost of the book with tax and the discount.

Jordan has $5.37, which he is using to buy ingredients to make salsa. he is buying one red pepper for $1.29 and three pounds of tomatoes. if jordan has exactly the right amount of money he needs, what is the price per pound of the tomatoes? choose the correct equation to represent this real-world problem. solve the equation and verify the reasonableness of your answer. a pound of tomatoes costs .