Simplify these 3 expressions for me. 1) Simplify 4: 3n + 6
2) Simplify the expression if n = 8 and m = 12. 3(m + n)
3) Simplify the algebraic expression for: -3x + 7x

Which answer is it for it to be simplified completely?

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.

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.