Assume the world catch of fish in 1950 was 13 million tons and in 1995 it was 98 million tons. Find the average rate of change in the marine catch from 1950 to 1995.

The number of fish in a pond triples every 9 years. By what percent does the population change each year?

A glacier advanced down a mountain from an elevation of 3000 m to 2000 m in 5 years. What was the glaciers rate of change in a year and a month?

Air flows through a duct at 2,100 cubic feet per minute (CFM). After several feet and a few vents, the air-flow decreases to 1,680 CFM. What is the percent drop that has occurred?

why would one need to use the instantaneous rate of change instead of the average rate of change

What is the rate of the current in miles per hour?

In 2000, 12.8% of vehicles sold were off-road vehicles. In 2010, that number decreased to 10.2%. Calculate and interpret the relative change in the number of off-road vehicles sold from 2000 to 2010.

Personal care aide is an occupation that is growing quickly. Assume that, in a certain region, tehre will be a need for 179,599 personal care aides in 2024, a growth of about 28% over 2014 levels. How many personal care aides were there in this region in 2014?

The half-life of radioactive radium (226Ra) is 1599 years. What percent of a present amount of radioactive radium will remain after 500 years?

A recent survey found that in a particular city of all poor children born in 1980, 11,500 enrolled in college, and 1024 graduated from college by age 24. Scale this rate to 100.