The discrete random variable X has probability distribution given by
P(X= x)= kx(6-x),x=1,2,3,4,5

a. Find the value of k.

b. Find the mode.

On saturday a souvenir shop had 125 customers.sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?

Jim had 15 minutes to do 5 laps around his school what would his time be