The water level in a pond decreased from 12 feet deep to 9 feet deep. What is the percent decrease in the water level?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?