Can someone please help me with 4 questions

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4