Find all the missing elements: B a C с A = 109° C = 13° b = 6 -С A b B = [?]° a = [ ] C = [ ] 1 c​

Pls , the question is in the picture!

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Drag each tile into the correct box. not all tiles will be used. find the tables with unit rates greater than the unit rate in the graph. then tenge these tables in order from least to greatest unit rate