You can represent quantities using variables and algebraic expressions.
The sum
You can represent any function in an unlimited number of ways, where all representations have the same domain and the same pairing of inputs with outputs.
A sequence is a function with domain the natural numbers 1, 2, 3, …. Using function notation, you can write the sequence
You can represent many real-world mathematical problems algebraically. These representations can lead to algebraic solutions.
Each of these sequence or series formulas involves four quantities. For each formula, describe the four quantities. Then explain how you can find the fourth quantity if you know the values of the other three.