Answer:
The answer is 60 hours.
Step-by-step explanation:
We could use proportions to solve.



Answer:
d = 6.324555
Step-by-step explanation:
d=√1−(−1))^2+(3−(−3))^2
d=√(2)^2+(6)^2
d=√4+36
d=√40
d=6.324555
D=Distance*
1) 16
2) 2
3) 6
4) 70
5) 9
6) 15
7) 20
Time used for the call to Zurich: ($5-$1.25)/$0.25=15 minutes
15minutes+3minutes=18minutes
Time used for the call to London: ($7.25-$1.25)/$0.25=24 minutes
24minutes+3minutes=27minutes
Difference between the two calls:27-18=9minutes