Which of the following sets is closed under multiplication? {0, 1, 2, 4} {0, 1} {1, 2}

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

Which expression is equivalent to (4 +6i)^2? ? -20 + 48i 8 + 12i 16 - 36i 20 + 48i