What percent of 34 is 9? show how you answered so i can understand better, !

Use the graph of the sine function y=2sinθ shown below

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+ 2/y is it a polynomial in one variable or not? and if so, why?