A publishing company's cost, in thousands of dollars, is represented by the function C(x)=x+3200 and its revenue, in thousands of dollars, is represented by the function R(x)=3x. Each book is represented by x. 1000 books sold

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.