यदि (y=21+3.5x), तो (x=2) से (x=12) तक (y) में कुल वृद्धि कितनी होगी?
If (y=21+3.5x), what is the total increase in (y) from (x=2) to (x=12)?
Explanation opens after your attempt
C. (35)
Concept
The change in (x) is (12-2=10). The total increase is \(3.5\times10=35\).
Why this answer is correct
The correct answer is C. (35). The change in (x) is (12-2=10). The total increase is \(3.5\times10=35\).
Exam Tip
(x) में परिवर्तन (12-2=10) है। कुल वृद्धि \(3.5\times10=35\) है।
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