Consider the functions $f$ and $g$ defined by \[f(x) = \sqrt{\dfrac{x+1}{x-1}}\qquad\qquad \text{and}\qquad\qquad g(x) = \dfrac{\sqrt{x+1}}{\sqrt{x-1}}.\]ex plain why $f$ and $g$ are not the same function.

The answer is why would a teacher ask that

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post