Solve what is 1/2 x 15

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a. m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?