How do I solve this question?

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)