What is the value of the expression shown below? 3 over 5 to the power of 2 + 4 × 3 − 2

a) 10 and 9 over 25

b) 11 and 2 over 25

c) 12 and 9 over 25

d) 13 and 2 over 25

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 .