Bernie who is 1.9 m talk is walking away from a street sign that is 3.0 m tall. Determine how far Bernie is from the street sign when his shadow measures 2.6 m

How do i do this activity, is appreciated

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

Icould really use some with this question.