What are the midline, amplitude, and period of this function?

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

Solve -.016x= -16. need solving this

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?