Can 4x+35 be factored? yes or no​

What is the greatest common factor of 6a, 8a^{2}, and 14?

News cameras take an overhead picture of a crowd at an outdoor event journalist then count the total number of people in the picture and use the sample of estimate the total number of people in the crowd this process is an example of

Aline on the wall and a line on the floor are skew. always, sometimes, or never?