Factor completely 3x3 + 3x2 − 18x. 3x(x + 3)(x + 2) 3x(x + 3)(x − 2) 3x(x − 3)(x + 2) 3x(x − 3)(x − 2)

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 .