Asubmarine dives below the surface, heading downward in three moves. if each move downward was 325 feet, where is the submarine after it is finished diving?

Which number produces a rationale number when multiplied by 1/5

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"