Help me please giving brainliest, look at photo

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

The function show two sisters' savings account and the rate at which they plan to deposit money

(x-5)1/2+5=2 what is possible solution of this equation