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Question:

a is inversely proportional to (b - 4). If a = 8 and b = 22, express a in terms of b.

A
$4454_w88_h41.png$

Explaination

A value (given as a in this problem) that is inversely proportional to another value (given as b-4) is written as (where k is a constant of proportionality): $4751_w88_h42.png$

substituting with given values of a and b: $1471_w99_h42.png$

8(22−4)=k

k=144

$4454_w88_h41.png$

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