## Peter Esperanza Peter Esperanza Barstow, United States of America I am a math teacher in Barstow High School and an adjunct instructor in Barstow Community College

## Work and education

Teacher
Barstow High School

## User videos ALGEBRA: Evaluating Algebraic Expressions
In mathematics, an algebraic expression is an expression built up from constants, variables, and a finite number of algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number). ALGEBRA Order of Operations
When expressions have more than one operation, we have to follow rules for the order of operations: First do all operations that lie inside parentheses. Next, do any work with exponents or radicals. Working from left to right, do all multiplication and division. Finally, working from left to right, do all addition and subtraction. ALGEBRA Graphing Logarithmic Functions
In this lesson you will learn how to graph logarithmic functions. The properties such as domain, range, vertical asymptotes and intercepts of the graphs of these functions are also explained. ALGEBRA Using Permutation
A permutation is an arrangement of objects in specific order. The notation for a permutation: nPr n is the total number of objects r is the number of objects chosen ALGEBRA Combination
A combination is "one or more elements selected from a set without regard to the order" The "without regard" means that the collection matters rather than order in combinations, so in the above example, the fact we ABC, ACB, BAC, BCA, CAB, CBA... for combinations, these are all 1 combination of letters A, B and C.