If your front lawn is 20.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates 1150 new snowflakes every minute, how much snow, in kilograms, accumulates on your lawn per hour? Assume an average snowflake has a mass of 1.60 mg.

44,160,000 mg/hr

Explanation:

If the lawn is 20 feet wide by 20 feet long this is 400 square feet.

on each of these 400 square feet in one minute are 1150 new snow flakes which makes 460,000 in total.

If each snowflake weighs 1.60 mg then 460,000 is 736,000 mg. But this is only per minute.

60 minutes in an hour is 44,160,000 mg of new snowflakes on that lawn in one hour.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.