Answer:

Step-by-step explanation:
To convert from degrees to radians
radian measure = degree measure × 
given degree measure = 45°, then
radian = 45 ×
( divide 45 and 180 by 45 )
= 
So you would divide 43.65 by 5 hours (to get 8.73), then you multiply by 7, and your final answer is $61.11
Hope that helps :)
I believe the answer is 0.9 because a significant figure is a similar difference