Selena is y years old and her sister molly is 4 years older than selena write an expression in simple form that represents the sum of the ages of the sisters

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.