During a baseball game, a baseball player got 4 hits out of 12 times at bat. What is the "hit" per "at bat" ratio for this player?

The verbal translation for the difference of m and 7 increased by 15

The random variable x is the number of occurrences of an event over an interval of ten minutes. it can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. it is known that the mean number of occurrences in ten minutes is 5.3. the appropriate probability distribution for the random variable

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