Jackie has $100 to spend on music downloads. All music downloads are selling at a price of $11.50
each, including tax. If x represents the number
of downloads Jackie purchases, and f(x)
represetns the dollar amount she has left, which
of the following function best represent this
situation.

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.