lf $15 < X < 30$ then $f (x) = | x - 15 | + | x - 30 |$ is

Increasing

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Decreasing

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Constant

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cannot be estimated

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Solution

The correct option is C Constant
$f (x) = (x - 15) - (x - 30)$
$= 15$

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Similar questions

15 < x < 30,

f (x) = | x - 15 | + | x - 30 |

$x$	$10$	$15$	$20$
$f (x)$	$14$	$18$	$28$

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