Please tell me the answer to this

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%.

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Which of the following expressions is equal to 2x^2+8