Help me please i hate math it's so complicated

2÷6+1/2 to the second power plus one

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

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 .