Describe all the x -values at a distance of 13 or less from the number 6

Question

Describe all the x-values at a distance of 13 or less from the number 6.

 

Enter your answer in interval notation.

 

To enter ∞, type infinity. To enter ∪, type U.

Answer 1

x is in the closed interval [-7, 13]

-7 < x < 19

16+ or - 13

= 13 or -7= the end points of the interval