PLEASE SOMEONE HELP WITH QUESTION 2 AND 3

Can someone me with these two circle theorem questions asap?

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.

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.