Which of the following is an example of a coefficient in the expression 4-9x?

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?