Will you be my friend? will mark brainiest and +100 points

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

Use set buikder notation to represent the following set: {, -2, -1, 0}

What is the sum of these mixed numbers 2 1/8 + 4 3/8