Answer:
4
Step-by-step explanation:
Answer: x-b=4
a) 140 weeks
b) 4 weeks
c) 140 miles
a)
1500=10w+100
1400=10w
w=140
b)
10w+100=15w+80
5w=20
w=4
c)
10(4)+100
140
108.5 liters
you multiply 3.5 by the days there are in January