Answer:
B
Step-by-step explanation:
If you plug in -9 you will get -11 for both side.
Step-by-step explanation:
A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom. ... Compounds contain different elements in a fixed ratio arranged in a defined manner through chemical bonds. They contain only one type of molecule.
The domain for n is 
Explanation:
The arithmetic sequence is
To determine the domain of the sequence, let us consider
as
Thus, the sequence becomes,
The domain of the function is the set of all x-values for which the function is real and well defined.
Since, the function has no domain constraints or undefined points. Therefore, the domain of the function is
Thus, the domain of the arithmetic sequence
is 
A variable is a symbol that stands in for an unknown value in a mathematical expression. We can use any symbol as a variable, but letters are most commonly used. A term is a single number, variable, or a number and a variable multiplied together.
Answer:
D
Step-by-step explanation: