For angle A it is known that sin(A)<0 and tan (A) =5

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%.

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

9/10 divide by -3/15 as a mixed number