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Math Topics

Prealgebra

Solving Equations

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1
The Distributive Property and Algebraic Expressions

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2
The Addition and Subtraction Properties of Equality

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3
The Multiplication and Division Properties of Equality

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4
Linear Equations in One Variable

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5
Evaluating Formulas

**Mini Lecture**

Let \(G=H\cdot R\) and find \(G\), if

\(H=36\) hours and \(R=\$8\) per hour.

\(H=20\) hours and \(R=\$6\frac{3}{4}\) per hour.

If \(C=\dfrac{5}{9}(F-32)\), find \(C\) if

\(F=158\)

\(F=32\)

If \(A=\pi r^2\), find \(A\) if \(\pi=\dfrac{22}{7}\) and

\(r=7\) feet

\(r=\dfrac{3}{4}\) feet

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6
Applications

**Mini Lecture**

The sum of a number and \(3\) is \(5\). Find the number.

Three times the sum of a number and \(1\) is \(18\). Find the number.

The length of a rectangle is twice its width. The perimeter is \(30\) meters. Find the length and width.

Dale is \(4\) years older than Sue. Five years ago the sum of their ages was \(64\). How old are they now?