Which of the following represents the most accurate estimation of 38+23

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?

How do i answer this i do not get this at