She walks 6/5 of a mile in 1 hour
So, she walks 1.2 miles per hour
The magnitude of the vector is √(7^2+12^2)=√(49+144)=√193
The direction is α=arctan(y/x)=arctan(12/-7)≈-59.74 however this is relative to the negative x-axis so we add 180° to get the standard angle...180-59.74=120.26°
So the vector is √193 @ 120.26°
33% because 66/200 is .33, and convert that to percentage by multiplying by 100
