Jack unfolded a cardboard box. the figure of the unfolded box is shown below:
which expression can be used to calculate the area of cardboard, in square inches, that was used to make the box?
a.8 x 6 x 6
b. 6 x 4 x 4
c. 4 x 6 x 6
d. 6 x 8 x 8

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 .