I don’t know if the 3 is right but can you help me? David painted for 2 hours and 40 minutes. David finished painting at 6:25 p. m. When did David start painting?

What is the distance between the points 4,10 and -3,-14 on the coordinate plane

Me because some of question i don’t understand

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