Write a word problem that can be solved by drawing an array

Organisms that live in the alpine and taiga biomes have developed unique adaptations that aid in their survival. the douglas-fir is a conifer tree that grows in the taiga biome. it has an average height of about 70 feet, and its wood is an important source of lumber.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

What numbers are included in the set of integers? what numbers are not included?