HELP ASAP

Solve for x. 9x / 7 = 18

x = 14
x = 2
x = -2

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

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