A department store sells a pair of shoes with a 80% markup. If the store bought the pair of shoes for $55.25. Round the price to the nearest dollar

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

Which expression gives the area of the triangle shown below

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?