Mark started doing math exercises at half past nine in the morning, and finished it at a quarter to eleven. Then, he continued to do English exercises, and finished them 10
minutes before twelve. How much longer did it take Mark to do the math exercises than
the English exercises?

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks