Respuesta :

Answer:

[tex]y = 25x[/tex]

Step-by-step explanation:

Given

[tex]Rate = 25[/tex]

Required

Cost of x pounds

To do this we simply multiply x by the rate

[tex]y =Rate * x[/tex]

[tex]y = 25 * x[/tex]

[tex]y = 25x[/tex]