The selling price of an item is $550. it is marked down by 20%, but this sale price is still marked up from the cost of $400. find the markup from cost to sale price.

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol

If i had 1234 apples and 1 banana what is the total amount

What is the area of a rectangle with vertices (-8,-2), (-3,-2), (-3,-6), and (-8,-6)? units