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Math Topics
Intermediate Algebra
Quadratic Equations and Functions
1
Summary
An object projected upward with an initial velocity of \(32\) feet per second will rise and fall according to the equation \[s(t)=32t-16t^2\] where \(s\) is its distance above the ground at time \(t\). At what times will the object be \(12\) feet above the ground?
The total weekly cost for a company to make \(x\) ceramic coffee cups is given by the formula \(C(x)=2x+100\). If the weekly revenue from selling all \(x\) cups is \(R(x)=25x-0.2x^2\), how many cups must it sell a week to make a profit of \(\$200\) a week?
An object is tossed into the air with an upward velocity of \(14\) feet per second from the top of a building \(h\) feet high. The time it takes for the object to hit the ground below is given by the formula \(16t^2-14t-h=0\). Solve the formula for \(t\).
2
Completing the Square
3
The Quadratic Formula

A company produces and sells copies of an accounting program for home computers. The total weekly cost (in dollars) to produce \(x\) copies of the program is \(C(x)=8x+500\), and the weekly revenue for selling all \(x\) copies of the program is \(R(x)=35x-0.1x^2\). How many programs must be sold each week for the weekly profit to be \(\$1\text{,}200\)?
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The Discriminant and Multiplicity
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Equations Quadratic in Form
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Graphing Quadratic Functions

A company selling copies of an accounting program finds that it will make a weekly profit \(P\) dollars from selling \(x\) copies according to the equation \[P(x)=-0.1x^2+27x-500.\] How many copies should it sell to make the largest possible profit and what is the largest possible profit?