Hi, I need help with my Mathematical Proofs homework. Note that some of these are "Select all that apply" so usually there is more than one answer. Please take your time, thank you :)

From the drop-down menu choose a contrapositive of the statement: If you are out of gas, your car won't run. [ Select] v If your car doesn't run, then your are not out of gas. If your car runs, then you are out of gas. If your car runs, then your are not out of gas. If your car doesn't run, then you are out of gas. Let a be a real number. For what value of a , the statement if a2