A triangle where one angle 120 degrees and another 50 degrees

I do not understand what you are asking for

I am assuming you want the missing angle, in this case it is 10

Triangle Sum Theorem states that a triangle is equal to 180 degrees

120+50 = 170

180-170

= 10

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.