The cost is £79.76. Since the car covers 560 miles and 34.5 miles is travelled by one gallon. So, dividing 560 by 34.5 we get 16.23. Since 1 gallon is 4.55 litres, 16.23 gallons is 73.8465. Now the cost of petrol is £1.08 per litre. So, multiplying 73.8465 by £1.08 we have £79.76
The answer is A) <span>Increasing: x < 7; decreasing: x > 7</span>
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a )


Two solutions.
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b )


One solution .
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c )


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d )


One solution.
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e )



Two solutions.
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f )


Two solutions .
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Math is real hard but I think irrational don’t quote me on that