Every story gets an additional 10% off the already discounted price. if an employee buys an item with an original price of $40, how much will the employee pay ?

The product of two negative rational numbers is always zero sometimes zero never zero

An angle that measures between 90 and 180° is called a(,

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.