What is the expression of the the value of the expression when n=3? -2n(5+n-8-3n

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

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