यदि (y=80+20x), तो (x) में कितनी वृद्धि करने पर (y) (160) बढ़ेगा?
If (y=80+20x), by how much must (x) increase for (y) to increase by (160)?
Explanation opens after your attempt
C. (8)
Concept
The total increase is \(20\Delta x\). From \(20\Delta x=160\), \(\Delta x=8\).
Why this answer is correct
The correct answer is C. (8). The total increase is \(20\Delta x\). From \(20\Delta x=160\), \(\Delta x=8\).
Exam Tip
कुल वृद्धि \(20\Delta x\) होगी। \(20\Delta x=160\) से \(\Delta x=8\) मिलता है।
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