What is half of 7/8 a. 7/16 b. 3/8 c.9/16 d. 7/32

Let r = 3. what is the value of r + 58?

Which matrix multiplication is possible?

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%.