The writing or communication style that is easiest to understand of the 5 communication style, I believe the Assertive Style is the easiest, and most effective. For writing it's the Expository wring style which is based on facts.
This conclusion can be drawn since correlative sentences are like "tag-team conjunctions." They working in pairs to join phrases or words that carry equal importance within a sentence.
The sentence is in active voice. The passive voice form of this sentence would be “How much money is saved by you in a year?” Active voice consists of a transitive verb.