5-(8v+5) = -4(1+3v)
5-8v-5 = -4 - 12v
-8v = -4 - 12v
4v = -4
v = -1
The answer is D $126,if three cost $54 that means one costs $18 and just multiply it with seven
Letting

, we get

and

, so we can parameterize the intersection by

where

.
Image attached.
T=(60cos78, 60sin78)
T=(12.47, 58.69)
C=45
d=√((45-12.47)^2+58.69^2)
d≈67.1km