Please answer ALL questions or none at all. Thank you in advance.

Which of these sentences are propositions? What are the truth values of those that are propositions? a) Please wait here. b) What is the color of your car? c) Dallas is the capital of Texas. d) 3+x=5. e) 5+5=10. Determine whether the following propositions are TRUE or FALSE. a) 2+2=4 if and only if 1+3=4. b) If it is raining, then it is sunny. c) If 2