How would you evaluate whether the slope of the dependent variable with an independent variable is the same for each level of the dummy varaible?

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

If you answer 2+2 you will get over 80 points

Find the solution(s) to x^2-14+49=0