6 less than the product of 2/3 and a number x is 8

If ac = 12 and ab=7 is it possible that bc =10

Ineed in figuring out this problem.

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .