How do i figure out of this opens up or down?
what is it’s axis?
what is it’s vertex?
and what are the x and y intercepts?

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%.

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then,the two had the same amount of money. how much money did each have originally?

Askateboard ramp is in the shape of a right triangle what is the height of the ramp