Please help me! This is due in 20 minutes and this is the last question!

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

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

Which statement is true about the discontinuities of the function f(x) = x-5/ 3x^2-17x-28