Identify a potential source of bias (if any). using random digit dialing, 1599 people were called and asked what obstacles (such as childcare or long hours at work) kept them from exercising. (source: yankelovich partners, inc. for shape up america! )

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

My final challenge question of the day! i have no tests, nothing to do this for, it is simply giving away free points for a you tube video! so 50 free points for answering the most simple question ever! here is the key to getting brainiest for this question. answer in under 50 seconds. you think you can do it. i think you can. here is the question: 1x2= i know! easiest question ever! and yes! if you answer this question, you will be on you so come on and get the free 50 while you can!

X- 3 = 4 solve this algebraic expression