What is equivalent to 16/81

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%

How do you find the circumfrance of a circle?

Solve the equation by completing the square. x^2+2x=17