Question

If 3x−y=12, what is the value of
8x/2y?

A) 212
B) 44
C) 82

Answer 1

`(8^x)/(2^y) 2y=2x^(12)`

Explanation:

Since the numerator and denominator have a common base, this expression can be rewritten as 2(3x−y).

substitute 12 for the exponent, 3x−y and you will get A

Answer 2

The answer is A
`2^(12)`

Explanation:

Since 2 and 8 are both powers of 2, substituting 23 for 8 in the numerator of

`(8x)/(2y)`

gives you

`(8x)/(2y) 2y=2x^(12)`