Find the standard deviation of the set of data to the nearest tenth: 5, 8, 2, 9, 4

The test scores of 32 students are listed below. construct a boxplot for the data set and include the values of the 5-number summary. 32 37 41 44 46 48 53 55 57 57 59 63 65 66 68 69 70 71 74 74 75 77 78 79 81 82 83 86 89 92 95 99

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

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?