Given g(x) = 6 – 5x, find value of m when g^-1(m) = -4

 Find the value of  $\log_x\frac{1}{64}=-2$  

Find   $\frac{\text{d}x}{\text{d}y}$  for  $\frac{6x-8}{3x}$  

 Find the value of k if the straight line  $y=kx+2$ is parallel to the straight line   $8x-2y+1=0$  

Given set of data 1, 3, 4, 6, 7, 7 and 9 , determine the interquartile range of this set.

If 2 and p are the roots of  $2x^2+3x+\ k=0$  , find the value of k and p.