Hilda has $210 worth of $10 and $12 stock shares the number of $10 shares is five more than twice a number of $12 shares how many of each does she have

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

What is the difference between the equations of a vertical and a horizontal line?

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