Answer :
The quadrilateral has 4 sides
Three of them are 2 ft, 13 in., and 15 in.
At first, we have to change the side with feet to inches
Since 1 foot = 12 inches, then
[tex]2ft=2\times12=24in.[/tex]The perimeter of the quadrilateral is the sum of the lengths of the 4 sides
[tex]P=s_1+s_2+s_3+s_4[/tex]Since
[tex]\begin{gathered} P=79 \\ s_1=13 \\ s_2=15 \\ s_3=24 \end{gathered}[/tex]Substitute them in the rule above
[tex]\begin{gathered} 79=13+15+24+s_4 \\ 79=52+s_4 \end{gathered}[/tex]Subtract 52 from both sides
[tex]\begin{gathered} 79-52=52-52+s_4 \\ 27=s_4 \end{gathered}[/tex]The length of the missing side is 27 inches
The answer is the last choice