How do i find answer? do i need to divide or multiply?

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

1.two more than the quotient of a number and 6 is equal to 7 use the c for the unknown number translate the sentence into an equation