The table shown below gives the approximate number of pieces of mail handled by the united states postal service for different years.
how many more pieces of mail were handled by the united states postal service in 1995 than in 1965?
express your answer in scientific notation.

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

Your client has saved $1,860 for a down payment on a house. a government loan program requires a down payment equal to 3% of the loan amount. what is the largest loan amount that your client could receive with this program

Extra points! find the missing dimension! need asap