9+ 10?

i'm 5 years old idk what i'm using buh fu

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

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year