When do i find the lcm and when do i find the gcf

What is the equation of the graph that represents f(x)=x^4 stretched vertically by 2 and shifted up 3 spaces

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%

Find the area of a parallelogram with base 15 yards and height 21 2/3