Find the circumference please help me

Wrote and expression for the difference of p and 4

Write a description of each inequality. 1. -5a + 3 > 1 2. 27 - 2b < -6 (this < has a _ under it) 3. 1/2 (c + 1) > 5 (this > has a _ under it)

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b