In a line graph showing the number of books read by a class over four months, if the line rises from 10 books in January to 25 books in April, what was the increase in the number of books read from January to April?

A line graph shows the temperature in a city over a week. If the temperature increased from 15°C on Monday to 25°C on Friday, what is the total increase in temperature over that period?

In a line graph displaying the number of video games sold each month, if the sales rose from 30 in May to 50 in August, what was the increase in sales during that time period?

A line graph shows the growth of a plant over six weeks. If the plant grew from 5 cm to 18 cm during this time, what was the total growth of the plant?

In a line graph showing the distance traveled by a bike over a five-day trip, if the distance increased from 40 km on Day 1 to 100 km on Day 5, what is the increase in distance over those days?

A line graph shows the number of participants in a running event over three years. If the number of participants increased from 150 in the first year to 300 in the third year, what was the increase in the number of participants?

A line graph illustrates the sales of lemonade over a summer season. If the sales increased from 120 cups in June to 320 cups in August, what is the increase in sales for that period?

In a line graph representing the water level in a reservoir over five months, if the level rose from 45 liters in January to 75 liters in May, what was the increase in water level during those months?

A line graph displays the number of pets adopted from a shelter over six months. If the number increased from 20 pets in January to 60 pets in June, what is the total increase in the number of pets adopted?

A line graph shows the number of hours studied by students over five weeks. If the hours studied increased from 10 hours in Week 1 to 30 hours in Week 5, what is the increase in hours studied during that period?