1. ________ is a symbol (generally a lowercase letter) that represents an unspecified element of a
set containing more than one element.
A. Variable
B. Inequality
C. Constant
D. Equation
2. In the expression 5xy, 5 is called a ___________.
A. Exponent
B. Variable
C. Expression
D. Numerical coefficient
3. A mathematical statement that may use numbers, variables, or both is a(n)_______.
A. Constant
B. Expression
C. Sequences
D. Variable
4. Choose the value of the constant term in the expression,
- 12x2+ 5x +1.
A. 5
B. 1
C. 0
D. - 12​