Need help asap will give

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 .

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?

Hello, i need compare km^2 and km. what's difference in this?