The sum of two positive integers, a and b, is at least 30. the difference of the two integers is at least 10. if b is the greater
integer, which system of inequalities could represent the values of a and b?
o a + b 2 30
a + b 2 30
a + b s 30
o a+b s 30
b2a + 10
bsa - 10
b2a + 10
b sa - 10