Find the GCF of 32a, 48b, and 16ab

When drawing a trend line for a series of data on a scatter plot, which of the following is true? a. there should be an equal number of data points on either side of the trend line. b. all the data points should lie on one side of the trend line. c. the trend line should not intersect any data point on the plot. d. the trend line must connect each data point on the plot.

Identify the number as a rational or irrational.explain. 127

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?