I need help on this!!/?

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 .

Complete the steps to find 4.830 ÷ 5

What is the equation of the line that is parallel to the line with the equation y= -3/4x +1 and passes through the point (12,-12)