What do i write in the small box please help me thank you

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

The table represents a linear function. what is the slope of the function? –6 –4 4 6

Find the value of the variable and the length of each secant segment.