• #### Rate Word Problems - Problem 2

##### Math›Algebra›Word Problems Using Systems of Equations
How to solve word problems involving air or water current.
• #### Rate Word Problems - Problem 1

##### Math›Algebra›Word Problems Using Systems of Equations
How to solve word problems about airplanes leaving opposite cities and moving toward each other.
• #### Rate Word Problems - Problem 4

##### Math›Algebra›Word Problems Using Systems of Equations
Setting up a system of equations to solve a windspeed or current speed word problem
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• #### Concept

##### Science›Chemistry›Chemical Reaction Rates
How chemists use collision theory to understand reactions and explain reaction rates.
• #### Concept

##### Science›Chemistry›Chemical Reaction Rates
How complex reactions proceed in several steps using reaction mechanisms.

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• #### Energy Diagrams

##### Science›Chemistry›Chemical Reaction Rates
How to graphically depict the variation in the energy of substances involved in reactions as they progress from reactants to products.

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• #### Step Functions - Problem 3

##### Math›Algebra 2›Additional Topics
How to solve an applied step function problem, taxi rates.
• #### Ratios - Problem 1

##### Math›Algebra›Solving Equations
How to write a ratio to describe a rate.
• #### Compound Interest (Continuously) - Problem 6

##### Math›Precalculus›Exponential and Logarithmic Functions
How to determine interest rate needed to achieve a certain amount after continuous compounding from an initial amount.
• #### Definite Integrals As Net Change - Problem 1

##### Math›Calculus›The Definite Integral
How to use the fundamental theorem of calculus to compute the net change given the rate.
• #### Compound Interest (Continuously) - Problem 6

##### Math›Algebra 2›Inverse, Exponential and Logarithmic Functions
How to determine interest rate needed to achieve a certain amount after continuous compounding from an initial amount.
• #### Compound Interest (Finite Number of Calculations) - Problem 4

##### Math›Precalculus›Exponential and Logarithmic Functions
How to find finitely compounded interest rate for an investment to reach a known amount after time.
• #### Compound Interest (Finite Number of Calculations) - Problem 4

##### Math›Algebra 2›Inverse, Exponential and Logarithmic Functions
How to find finitely compounded interest rate for an investment to reach a known amount after time.
• #### The Definition of the Derivative - Concept

##### Math›Calculus›The Derivative
How to define the derivative of a function at a point x=a.
• #### Economics: Cost & Revenue - Problem 1

##### Math›Calculus›Applications of the Derivative
How to determine intervals of time when the average rate of change is negative or positive, and how to compute average rate of change from a graph.
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• #### 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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