You earned a 15% commission on the magazines you sold. your first month sales were$200. how much in commission did you earn

In triangle abc segment de is parallel to the side ac . (the endpoints of segment de lie on the sides ab and bc respectively). find de, if ac=20cm, ab=17cm, and bd=11.9cm;

Find the length of cu, the triangles are similar.

Write the equation in logarithmic form e^x=403.429