. The design costs of an advertisement in a glossy magazine are $9000 and the cost per cm2 of print is $50. (a) Write down an expression for the total cost of publishing an advert which covers x cm2. (b) The advertising budget is between $10 800 and $12 500. Write down and solve an inequality to work out the minimum and maximum area that could be used.

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Chapter1: Functions And Models
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Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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4. The design costs of an advertisement in a glossy magazine are $9000 and
the cost per cm2 of print is $50.
(a) Write down an expression for the total cost of publishing an advert which
covers x cm2.
(b) The advertising budget is between $10 800 and $12 500. Write down and
solve an inequality to work out the minimum and maximum area that could be
used.

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