If y-18=14 what is the value of 3(y+5)?

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

Is the square root of 4 plus the square root of 16 rational?

Is there an x intercept in the equation 60*1.15^x