Complete each of the following sentences correctly

1. The graph of $\displaystyle {f{{\left({x}\right)}}}={\left({x}+{42}\right)}^{{2}}$ can be obtained from Select an answer shifting stretching shrinking reflecting the graph of $\displaystyle {f{{\left({x}\right)}}}={x}^{{2}}$ to the left 42 units.
   
   
2. The graph of $\displaystyle {f{{\left({x}\right)}}}={x}^{{2}}+{42}$ can be obtained from Select an answer shifting stretching shrinking reflecting the graph of $\displaystyle {f{{\left({x}\right)}}}={x}^{{2}}$ upwards 42 units.
   
   
3. The graph of $\displaystyle {f{{\left({x}\right)}}}={42}\sqrt{{{x}}}$ can be obtained from Select an answer shifting stretching shrinking reflecting the graph of $\displaystyle {f{{\left({x}\right)}}}=\sqrt{{{x}}}$ vertically by a factor 42.
   
   
4. The graph of $\displaystyle {f{{\left({x}\right)}}}=\sqrt{{{42}{x}}}$ can be obtained from Select an answer shifting stretching shrinking reflecting the graph of $\displaystyle {f{{\left({x}\right)}}}=\sqrt{{{x}}}$ horizontally by a factor $\displaystyle {\frac{{{1}}}{{{42}}}}$.