Help, please!
Which table represents an arithmetic sequence?

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103