We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.

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.

 Feb 22, 2019

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





cool  cool cool

 Feb 22, 2019


   which can be rewritten




    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



I think is this right?

 Feb 22, 2019

5 Online Users