(Solved): The total cost for a production process is equal to $500 plus two times the number of units produce ...

The total cost for a production process is equal to $$\$500$$ plus two times the number of units produced. The mean and variance for the number of units produced are 700 and 900 , respectively. Find the mean and variance of the total cost. The mean of the total cost is $$\$$$ The variance of the total cost is