Practical Problem: Shelf Space
Using the substitution method with a system of equations to solve a practical problem involving use of shelf space.
Practical Problem: Skid Marks and Speeding Cars
A practical application for using an approximate square root is illustrated in finding the speed a car was travelling before an accident occurred.
Practical Problem: Subtracting Boxes in a Warehouse
A practical problem solved using subtraction in an algebraic expression.
Practical Problem: The Amount of Weight a Shelf Can Hold
The amount of weight a shelf can hold varies with the length, width, and thickness of the board. Finding how much weight a specific board can hold combines direct, joint, and inverse variation and is illustrated here.
Practical Problem: The Area of a Garden
Using multiplication of polynomials in a practical problem.
Practical Problem: The Cost of Plumbing Repairs
A practical application of the slope-intercept equation involving rate of change is demonstrated.
Practical Problem: The Height of a Stack of Newspapers
Using the slope-intercept form of equation, a practical problem involving the rate of growth of a stack of newspapers is calculated.
Practical Problem: The Length of the Spring on a Scale
Using the elimination method to solve a practical problem involving a scale, a spring, and some weights.
Practical Problem: The Path of a Golf Ball
Using a quadratic equation to describe the relationship between variables in a practical problem involving the flight time of a golf ball.
Practical Problem: The Speed of Two Pulleys
A practical problem involving the speeds of two pulleys of different diameters is solved using inverse variation.