What is the average rate of change of the function f (x) = 20 (1/4)^x from x=1 to x = 2? enter your answer as a decimal in the box do not round your answer.

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.