Match the following. 1. a letter or symbol used to represent an unknown number. ___ formula

2. one term or multiple terms connected by an addition or subtraction sign. ___ expression

3. a number or a variable, or the product of a number and variable(s). ___ constant

4. an equation that uses variables to state a rule. ___ variable

5 a number; a term containing no variables. term​

A variable is a letter or symbol used as a placeholder for an unknown value.Multinomial: An algebraic expression of two terms or more than three terms is called a multinomial.A monomial is a number, a variable, or a product of numbers and variables with whole number exponents. The degree of a monomial is the sum of the exponents of the variables. A constant has degree 0.expressionconstant

3units/ 5 feet = 60 units/ 100 feet3 units/ 5 feet = 18 units/ 30 feetthe dimensions of the scale drawing are 60 units by 18 units.hope this !