Help me FAST :> math problem 15 points come on please

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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