Need pro help, nobody is getting them right. this is my last attempt

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

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

What is 140% of 25? because i need