What expression can be used to estimate 868÷28

Anyone know? is appreciated! will mark brainliest if correct!

Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?