Can someone please answer all these questions please, you don't have to explain

Question and answers are in the attached picture. you so much in advance.

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4