divide 42 by 6 and get 7 so mulyiply 7 by 9
Answer:
Step-by-step explanation:
16x4-2400x3+75x2+300/ 100
The boat(x) goes 1mi/hr because 4 mi and 4hr divide each by four. The rate of the river current S twice that because the time is halved so y=8mi/hr