A closed circle on the number line means that the number a possible solution. A. is not
B. is

Can someone show me the steps to solve the problem?

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?

The box plots show the distributions of the numbers of words per line in an essay printed in two different fonts.which measure of center would be best to compare the data sets? the median is the best measure because both distributions are left-skewed.the mean is the best measure because both distributions are left-skewed.the median is the best measure because both distributions are symmetric.the mean is the best measure because both distributions are symmetric