Find the mean of the following data set.
42, 45, 58, 63
42
47
52

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.