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Algebra, STD2 A1 SM-Bank 10

For adults (18 years and older), the Body Mass Index is given by

 where    in kilograms and    in metres.

The medically accepted healthy range for    is  .

What is the minimum weight for a 163 cm adult female to be considered healthy? (2 marks)

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Algebra, STD2 A1 SM-Bank 9

The volume of a sphere is given by    where    is the radius of the sphere.

If the volume of a sphere is  , find the radius, to 1 decimal place.  (3 marks)

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Algebra, STD2 A1 2015 HSC 28d

The formula    is used to convert temperatures between degrees Fahrenheit and degrees Celsius .

Convert 3°C to the equivalent temperature in Fahrenheit.  (2 marks)

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Algebra, STD2 A1 2004 HSC 11 MC

If  , what is a possible value of    when  ?

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Algebra, STD2 A1 2007 HSC 24b

The distance in kilometres () of an observer from the centre of a thunderstorm can be estimated by counting the number of seconds () between seeing the lightning and first hearing the thunder.

Use the formula    to estimate the number of seconds between seeing the lightning and hearing the thunder if the storm is 1.2 km away.   (1 mark)

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