How to find the number of combinations of a set.
How to define joint and combined variation.
How to know when to use combinations or permutations.
The combined law for gases.
How to simplify expressions by distributing and/or combining like terms.
Combining capacitors and resistors in electric circuits.
How to add or subtract polynomials.
Recognizing and understanding synthesis reactions.
How to define a composition of transformations; how to perform a composition of translations.
How to use the fundamental counting principal.
How to solve multi-step equations.
How to solve equations with the same variable on both sides.