Solve the given equation or inequality graphically. state your answers rounded to two decimals. (a) 7x2 − x3 = −x2 + 3x + 6 (enter your answers as a comma-separated list.) x = (b) 7x2 − x3 ≤ −x2 + 3x + 6 (enter your answer using interval notation.) x =

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.