Posted by elizabeth on Wednesday, April 20, 2011 at 9:43am.
My kids are stuck on this they've no idea what to do and I can't help them out either!
Darren throws a stone from the top of a vertical cliff into the sea below.
The trajectory of the stone can be modelled by the quadratic equation
y = (x^2/3)+2x+24
where y represents the height in metres of the stone above sea level, and x is the horizontal distance of the stone from the bottom of the cliff
measured in metres.

maths  MathMate, Saturday, April 23, 2011 at 7:48pm
We don't see a question here!

maths  prashant, Wednesday, June 11, 2014 at 5:25pm
the demand y for a commodity when its price is ,3x15/2x+7 find the elasticity of demand when price is 10
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