Answer:
3x+7+4x-16= 180 degrees
7x-9=180
7x=189
x= 27
yax= 3x+7
3*27+7= 81+7 = 88
3:5
60:100
90:150
120:200
15:25
150:250
180:300
210:350
i dont know
Step-by-step explanation:
sorry big homie on school