What is 4+5+6+9+4+5+8+7+6+8+8+2+1+5

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

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 .

The function v(r)=4/3pir^3 can be used to find the volume of air inside a basketball given its radius. what does v(r) represent