Question

15.(a)The monthly cost of local calls on a mobile phone is $8 plus 9 cents per call.

Write an expression for the total cost, in dollars, of r local calls in x months.
15.(b)The cost of hiring a bicycle is made up of two parts.
There is a fixed charge of $10 and a charge of $5 for each day that the bike is hired.
Write an expression for the total cost, in dollars, of hiring a bike for n days.

Answer 1

$23

Explanation:

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