Which is equal to a rotation of 90°ccw?

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 .

What’s 8y+48 and factor each expression completely

Aphrase is shown read the phrase and give me the answer