Expression 1: "y" equals 49.6sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, "x" plus 302 , right parenthesis , right parenthesis plus 17.4sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 2 "x" plus 298 , right parenthesis , right parenthesis plus 13.8sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 3 "x" plus 195 , right parenthesis , right parenthesis plus 7.1sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 4 "x" plus 215 , right parenthesis , right parenthesis plus 4.5sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 5 "x" plus 80 , right parenthesis , right parenthesis plus 0.6sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 6 "x" plus 171 , right parenthesis , right parenthesis plus 2.7sine left parenthesis, StartFraction, pi Over 180 , EndFraction plus left parenthesis, 7 "x" plus 34 , right parenthesis , right parenthesis plus 0.6sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 8 "x" plus 242 , right parenthesis , right parenthesis plus 1.6sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 9 "x" plus 331 , right parenthesis , right parenthesis plus 1.3sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 10 "x" plus 208 , right parenthesis , right parenthesis plus 0.3sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 11 "x" plus 89 , right parenthesis , right parenthesis plus 0.5sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 12 "x" plus 229 , right parenthesis , right parenthesis plus 0.7sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 13 "x" plus 103 , right parenthesis , right parenthesis plus 0.3sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 14 "x" plus 305 , right parenthesis , right parenthesis plus 0.4sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 15 "x" plus 169 , right parenthesis , right parenthesis plus 0.5sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 16 "x" plus 230 , right parenthesis , right parenthesis plus 0.5sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 17 "x" plus 207 , right parenthesis , right parenthesis plus 0.4sine left parenthesis, StartFraction, pi Over 180 , EndFraction left parenthesis, 18 "x" plus 64 , right parenthesis , right parenthesisy=49.6sinπ180x+302+17.4sinπ1802x+298+13.8sinπ1803x+195+7.1sinπ1804x+215+4.5sinπ1805x+80+0.6sinπ1806x+171+2.7sinπ180+7x+34+0.6sinπ1808x+242+1.6sinπ1809x+331+1.3sinπ18010x+208+0.3sinπ18011x+89+0.5sinπ18012x+229+0.7sinπ18013x+103+0.3sinπ18014x+305+0.4sinπ18015x+169+0.5sinπ18016x+230+0.5sinπ18017x+207+0.4sinπ18018x+64