exam
Maths Puzzle
Numerical Ability
Find all intercepts for the graph of the quadratic function. f(x)=5x^2-38x+21
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exam Other Question
The total profit (in dollars) for sales of x rowing machines is given by P(x) = 0.2 x^2 + 300x - 200. What is the profit if 500 are sold? For what value of x will the profit be at a maximum?
what are the answers to these equations all on the same graph;
y=2x squared
y=-1/4x squared
y=-x squared + 2x-2
y= x squared - 2x=2
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and how so?