• #### Instantaneous Rate of Change - Concept

##### Math›Calculus›The Derivative
How to estimate the instantaneous rate liquid is pouring out of a container at t=4 by computing average rates of change over shorter and shorter intervals of time.
• #### Percent Concentrations - Problem 3

##### Math›Algebra›Word Problems Using Systems of Equations
How to solve word problems about mixing two liquids with different percent concentrations and one of the ingredients is "pure."
• #### Percent Concentrations - Problem 1

##### Math›Algebra›Word Problems Using Systems of Equations
How to solve word problems about mixing two liquids with different percent concentrations and the quantity of one ingredient is unknown.
• #### Percent Concentrations - Problem 2

##### Math›Algebra›Word Problems Using Systems of Equations
How to solve word problems about mixing two liquids with different percent concentrations and the concentration of the mixture is unknown.
• #### Optimization Using the Second Derivative Test - Problem 3

##### Math›Calculus›Applications of the Derivative
How to compute the average rate of change of the amount of liquid in a tank over an interval of time, and how to represent this average rate on a graph.
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• #### Average Rate of Change - Problem 1

##### Math›Calculus›The Derivative
How to compute the average rate of change of the amount of liquid in a tank over an interval of time, and how to represent this average rate on a graph.