Answer:
3200 miles
Step-by-step explanation:
since every hour the plane travels 400 miles, multipy 8(hours) by 400.
74
(8x10) - 6 =
80 - 6 = 74
30+(2x+7)+63=180(sum of angles of triangle )
30+2x+7+63=180
2x+100=180
2x=180-100
x=80/2
x=40