Evaluate each expression if r=−3,s=4, and t=7  

I need answers FAST! So confused! Please Help!!​

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%.

What term makes it inconsistent y=2x - 4

Acylinder has volume 45π and radius 3. what is it’s height?