For what values of a and b will the following system of linear equations has infinitely many solutions ? 21 - 3y = 7 ; (a+b)x - (a +b -3)y = 4a+b​

The frequency table shows the results of a survey asking people how many hours they spend online per week. on a piece of paper, draw a histogram to represent the data. then determine which answer choice matches the histogram you drew. in order here is the.. hours online: 0-3, 4-7, 8-11, 12-15, and 16-19. frequency: 5, 8, 10, 8, 7 answer for the question is in the picture! : )