Don’t get it i hate this teach need

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9

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.