Find the solutions of the equation.

x^2 - 4x - 5 = 0

question 12 options:

x = 5 and x = 1

x = 5 and x = -1

x = -5 and x = -1

x = -5 and x = 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 .