4(3x to the power of 2) out of (2x to the power of 2)

Ihonestly have no clue if it's each or none.

Solve the system of equations. x=-2y+1 and x+2y=9. show work

Q= {1.7, 1.1, 1.4, 2.1, 2.3, s}. what is the absolute difference between the greatest and least possible values of the median of set q? express your answer as a decimal to the nearest hundredth.