A four-digit code can use the numbers 1, 2, 3, 4. Any of the numbers can be repeated. What is the total number of possible codes?

What is the probability the code will be 3333?

Find the maximum value of p= 4x + 5y subject to the following constraints :

This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer

Television viewing reached a new high when the global information and measurement company reported a mean daily viewing time of 8.35 hours per household. use a normal probability distribution with a standard deviation of 2.5 hours to answer the following questions about daily television viewing per household. a. what is the probability that a household views television between 4 and 10 hours a day? (to 4 decimals) b. how many hours of television viewing must a household have in order to be in the top 7% of all television viewing household? (to 2 decimals) c. what is the probability that a household views television more than 4 hours a day? (to 4 decimals)