Which expression describes 9 less than 5 times some number

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

It is given that the quadratic equation hx²-3x+k=0, where h and k are constants, has roots [tex] \beta \: and \: 2 \beta [/tex]express h in terms of k