If 3x−y=12, what is the value of 8x2y?

A) 212

B) 44

C) 82

D) The value cannot be determined from the information given.

bigbrotheprodude Feb 22, 2019

#1**+4 **

Can't say

y = 3x - 12 ...... but x, y can take on infinite values because this is a line

So...without any other info

8x2y could take on infinite values, as well

CPhill Feb 22, 2019

#2**0 **

(23)x2y

which can be rewritten

23x2y

Since the numerator and denominator have a common base, this expression can be rewritten as 2(3x−y). In the question, it states that 3x−y=12, so one can substitute 12 for the exponent, 3x−y, which means that

8x2y=212

I think is this right?

bigbrotheprodude Feb 22, 2019