Can someone me with this algebra 1?

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 .

Which of the following represents the factorization of the trinomial below? x^2+7x-30

2f(x)= x+3 if 4 < x < 8 2x if x 28 2