What is the density of a 60-gram pyramid with rectangular base 5 cm x 7 cm and height 9 cm? Will give brainliest to whoever gets it right

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 .