33 x 1/3 = 9 x ??? Please help

Name the most appropriate metric unit for each measurement like the mass of cow

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

Describe how to determine the average rate of change between x = 4 and x = 6 for the function f(x) = 2x^3 + 4. include the average rate of change in your answer.