Write a rule for the nth term of the arithmetic sequence. Please include steps, I'm having a very difficult time understanding!

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Through: (-3,-3) parallel to y= 7/3x+3

Are triangles the congruent? write the congruency statement.what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?