Question

Which is equivalent to log 2 18 = x-1

Answer 1

Given:

The given expression is
`log_2{18}=x-1`

We need to determine the equivalent expression.

Equivalent expression:

The equivalent expression of the given expression can be determined using the property.

If
`log_b {x}=y` then it is equivalent to
`x=b^y`

The given expression is of the form
`log_b {x}=y`, where
`b=2, x = 18` and
`y=x-1`

Thus using the above property, the given expression can be written as,

`18=2^(x-1)`

Thus, the equivalent expression is
`18=2^(x-1)`

Hence, Option d is the correct answer.