Are these correct? pls help. i’ve failed quiz 2x already

Write the expression as a single natural logarithm. 2 in a - 4 in y

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.

How is the interquartile range calculated?