A taxi journey costs $£9$ upfront, and then $£2$ for every mile travelled. We need to find the cost for journey lengths of 1, 2, and 3 miles, denoted by A, B, and C, respectively.

1. Problem Description

A taxi journey costs $£9$ upfront, and then $£2$ for every mile travelled. We need to find the cost for journey lengths of 1, 2, and 3 miles, denoted by A, B, and C, respectively.

2. Solution Steps

The total cost of the journey can be expressed as:

$Cost = 9 + 2 \times Miles$

To find A, the cost for 1 mile:

$A = 9 + 2 \times 1 = 9 + 2 = 11$

To find B, the cost for 2 miles:

$B = 9 + 2 \times 2 = 9 + 4 = 13$

To find C, the cost for 3 miles:

$C = 9 + 2 \times 3 = 9 + 6 = 15$

3. Final Answer

A = 11

B = 13

C = 15