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A climber is on a hike. After 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is the average rate of change?
down 2 ft/sec
grew 5 cm/year
1/2 in. of rain per hour
30 problems/hr
$10/week
75 ft/hr
-1 degree/minute
50 miles per hour
In January of 2000, Daniel was 146 cm tall. In January of 2006, he was 176 cm tall. What was his rate of growth over this period of his life?
down 2 ft/sec
grew 5 cm/year
1/2 in. of rain per hour
30 problems/hr
$10/week
75 ft/hr
-1 degree/minute
50 miles per hour
A scuba diver is 20 feet below the surface of the water 10 seconds after he entered the water and 100 feet below the surface after 50 seconds. What is the scuba divers rate of change?
down 2 ft/sec
grew 5 cm/year
1/2 in. of rain per hour
30 problems/hr
$10/week
75 ft/hr
-1 degree/minute
50 miles per hour
At 1:00 PM two inches of rain had fallen and by 5:00 PM four inches of rain had fallen. What is the rate of change between 1 and 5 PM?
down 2 ft/sec
grew 5 cm/year
1/2 in. of rain per hour
30 problems/hr
$10/week
75 ft/hr
-1 degree/minute
50 miles per hour
Jack is driving from his house to the airport. At 9:00AM, he is 150 miles from the airport. At 10:30AM, he is 75 miles from the airport. What is Jack’s average driving speed between 9:00AM and 10:30AM?
down 2 ft/sec
grew 5 cm/year
1/2 in. of rain per hour
30 problems/hr
$10/week
75 ft/hr
-1 degree/minute
50 miles per hour
Jenny conducted a science experiment on the cooling temperature of water. After 5 minutes the temperature was 95 degrees F. After 10 minutes the temperature was 90 degrees F. What is the rate of change?
down 2 ft/sec
grew 5 cm/year
1/2 in. of rain per hour
30 problems/hr
$10/week
75 ft/hr
-1 degree/minute
50 miles per hour
Michael started a savings account with $300. After 4 weeks, he had $350 dollars, and after 9 weeks, he had $400. What is the rate of change of money in his savings account per week?
down 2 ft/sec
grew 5 cm/year
1/2 in. of rain per hour
30 problems/hr
$10/week
75 ft/hr
-1 degree/minute
50 miles per hour
Jill is operating a computer to solve math problems. There are a total of 100 problems for her to solve. She worked from 3 o’clock to 5 o’clock, after which there were only 40 problems left to solve. What is the average rate of problems solved?
down 2 ft/sec
grew 5 cm/year
1/2 in. of rain per hour
30 problems/hr
$10/week
75 ft/hr
-1 degree/minute
50 miles per hour
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