5x+2<32 plz answer asap

Pls! does anybody know a shortcut for answering these types of questions in the future?

What is the y intercept of f(x)=(1/2)^x?

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%