Rate of change word problems quiz

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 800 feet. What is the average rate of change? 

• 100 ft/h
• .25 ft/h
• 133 ft/h
• 200 ft/h

 A scuba diver is 40 feet below the surface of the water 10 seconds after he entered the water and 100 feet below the surface after 40 seconds. What is the scuba divers rate of change? 

• 2 ft/s
• .5 ft/s
• 60 ft/s
• 4 ft/s

A rocket is 1 mile above the earth in 30 seconds and 10 miles above the earth in 2.5 minutes. What is the rockets rate of change in miles per second? 

• .075 mi/s
• 40 mi/s
• 4 mi/s
• 9 mi/s

A Chef weighed 145 lbs in 1986 and weighs 190 lbs in 2016. What was the rate of change in weight? 

• 1.5 lb/y
• 45 lb/y
• .66 lb/y
• 6.3 lb/y

Michael started a savings account with $300. After 4 weeks, he had $350 dollars, and after 8 weeks, he had $400. What is the rate of change of money in his savings account per week? 

• 12.5 dollars per week
• 50 dollars per week
• 44.4 dollars per week
• .875 dollars per week

Michael scored  210 points in 16 games. What was his average points per game?

• 13.125 points per game
• .076 points per game
• 210 points per game
• 16 points per game

A car travels 100 miles in an 5 hours, what is its speed?

• 60 mph
• 30 mph
• 20 mph
• 15 mph

Frank worked fro 8:00 am until 5:00 pm and made $100. What was his hourly rate?

• $20 per hour
• $16 per hour
• $10 per hour
• $11.11 an hour

Jamal is saving up for a $120 bike. He has $50 saved up already and earns $10 a week.What is the rate in this story?

• 120
• 50
• 10 
• 7

Will hit 20 runs so far this seasons. From then on he hits 3 runs per game for the next 4 games. What is the rate in this story?

• 3
• 4
• 20
• .75