Answer:
Step-by-step explanation:
Using vector method to solve it
Resultant can be given by


R=671.12 Km/hr
The angle made by resultant with 700 km/hr is 
using sine rule



The foctor of 40 I this = 1,2,4,5,8,40
12.50 x 40 = 500; this is his first week pay from $12.50 an hour for 40 hours
(15 x 55) + 100 = 925; this is the second pay from $15 an hour for 55 hours and an additional $100
Hope this helps! (If not correct me if its wrong xd)
Weird. I think you just need to look if the point falls on the shaded area. But only (-5,5) does ...