Using the function: f(x)=5x+1 1. f(2)=

2. f(-6)=

3. If f(x) =16, then x=

4. If f(x)= -49, then x=

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

How to do this , and can some one explain

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