What is the discriminant of the quadratic equation 4x2 + x + 3 = 0?

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

Can someone me do math because i am having a breakdown rn because i don’t get it

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?