Hey I’m in class but it is fine to help a friend so that answer is 1350
SOH-CAH-TOA
sin=opp/hyp
cos=adj/hyp
tan=opp/adj
1. Sin c=opp/hyp 2. tan=opp/adj 3. sin=opp/hyp
sin c=8/17 tan38°=x/16 sin38=18/x
x=18/sin38; x=29.236846

The multiple zero is x = -4.
The multiplicity is 2 because there are two values of x.