ISE Intermediate Algebra
6th Edition
ISBN: 9781264418756
Author: Miller, Julie, O'Neill, Molly, Hyde, Nancy
Publisher: McGraw Hill
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An investment was worth $2,451 in 1993. In 1998, its value was $5,046. Find and interpret the average rate of change in
value per year.
O A. The average rate of change is 2,451. This means that the value of the investment increased by $2,451 per year
during these years.
OB.
The average rate of change is 519. This means that the value of the investment increased by $519 per year during
these years.
O C.
The average rate of change is 7,641. This means that the value of the investment increased by $7,641 per year
during these years.
O D. The average rate of change is 519. This means that the value of the investment decreased by $519 per year during
these years.
Web conferencing has grown over the last 20 years. The amount (in millions of dollars) spent on Web conferencing from 2006 through 2010 is listed in the table.
year
2006 2007 2008 2009 2010
Amount 920 1160 1380 1600 1900
a. What is the average rate of change in the amount spent on Web conferencing from 2006 to 2008? Include units.
Units are required for this answer.
X
b. What is the average rate of change in the amount spent on Web conferencing from 2007 to 2008? Include units.
c. What is the average rate of change in the amount spent on Web conferencing from 2008 to 2010? Include units.
d. What is the average rate of change in the amount spent on Web conferencing from 2008 to 2009? Include units.
e. Give a good approximation for the rate of change in the amount spent on Web conferencing by the end of 2008? Include units.
The average running speed of watch users is 6 miles/hr. The average speeds of three
users are provided. Which user's speed is closest to the average speed? Write your
answer in the box given below.
Hint: Speed = Distance/Time
User 1: 20 miles in 2 hours
The user whose speed is
closest to the average speed is: User
User 2: 6 miles in 3 hours
User 3: 8 miles in 2 hours
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