The driver slams on the brakes and goes from 165 mph to 85 mph in 4 seconds. What is the acceleration of the car?

I'll give brainliest if you answer right : )

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.

Solve for x and select the correct answer