Please help Select the interval

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.