Use mathematical induction to prove the indicated sum formula is true for all natural numbers n.
7 + 14 + 21 + 28 + . . . + 7n = 
;
an = 7n, Sn = 
Definitions:
Consequence
The outcome or result that naturally follows an action, inaction, or occurrence.
Generation
A group of individuals born and living contemporaneously, sharing similar social, cultural, and economic circumstances.
Adaption
The process by which organisms adjust to new environments or changes in their current environment.
Environment
The surroundings or conditions in which a person, animal, or plant lives or operates; can include natural, social, and built factors.
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