Functions f(x) defined by line l1 with h=-2, k=2 and g(x) defined by l2 with h=3 k=3

(a) f(f(a))=a+4
(b) g(g(b))=b
(c) f(g(c))=-c+5
(d) g(f(d))=-d+1

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?

One positive integer is 2 less than another. the product of the two integers is 24. what are the integers