In a triangle rstv, rs=5.3cm and st=4.1 find perimeter of rstv

Which of the following statement about pascal's triangle are true?

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

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?