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The cost
C
, in £, of a monthly phone contract is made up of the fixed line rental
L
, in £, and the price
P
, in £ ,of the calls made. Enter a formula for the cost and, enter the cost if the line rental is £20 and the price of calls made is £12.


Sagot :

Answer:

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Answer:

Step-by-step explanation:

its 18

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