Find the LCM of 7m- 21 and 14m - 42. ( with explanation pls) A. M-3
B. 98(m-3)
C. 7(m-3)
D. 14(m -3)

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

The number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)