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The price of first class stamp has followed inflation over time and has increased at a constant
Percentage over time. The most useful predictive model is probably…
Sum
The result of adding two or more numbers or expressions together.
Polynomials
Algebraic expressions consisting of variables and coefficients, constructed from operations of addition, subtraction, multiplication, and non-negative integer exponents of variables.
Expression
A combination of numbers, variables, operators, and sometimes parentheses that represents a value or quantity.
Decimal Notation
A way of expressing numbers that uses a decimal point to separate the whole part from the fractional part.
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