Consider the frama shown in $($Figure $1).$Suppose that w$1=0\mathrm{.}75$k$/$ft and w$2=2\mathrm{.}25$k$/$ft$.($a$)$Determine $($approximately$)$the moment at joint I. $($b$)$Determine $($approximately$)$ the moment at joint L$.($c$)$What is the moment at joint H caused by member HG$?$ Express your answer in kilopounds feet to three significant figures. Enter a positive value for a counterclockwise moment and a negative value for a clockwise moment.