Please help me on #5 Please show work so I can follow

#5
Since the elevation of the picture is
[tex]-8\frac{5}{12}[/tex]We need to change it in decimal, then divide the numerator of the fraction by the denominator of the fraction
[tex]\frac{5}{12}=0.41666666=0.416^-[/tex]Then the elevation in decimal is
[tex]-8.416^-[/tex]