HELP Please no copy and pasting but in your own words explain dilation. This is for math

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?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20