Write an expression that is equivalent to 5(x + 2) - 7(x + 2)?

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

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?