What is the sum of (4a−a^3−3)+(2a^3−5a^2+8)?

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

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%

Is the square root of 4 plus the square root of 16 rational?