... pairs: 48 000 48 0001 48 000 12 000 48 000 2 4 2 2,,(),,,()====88 000 4 12 0003 000 48 000 4 48 0001630 2 ,,,,(),,====000Retest1. The correct answer is 4 32. First, find r: 27 2 27 236631 2 2×=×===−rrrr()To ... a()()()()() 22 3 24 22 6 34 4 2 +=+ + +−=+ +++−= +44 6 34 76 2 2aa aaa+++−=++ 4. (D) Substitute f(x) for x in the function g(x) =x + 3:g(f(x)) = f(x) + 3Then substitute x 2 for f(x):g(f(x)) = x 2 ... f(x):g(f(x)) = x 2 + 35. (D) f(x 2 ) = x 2 2, and fx()() 2 = x 2 2().Accordingly, f(x 2 ) ÷ fx()() 2 = x 2 2 ÷ x 2 2() =x 2 2 · 4 2 x = 2. Exercise 61. (B) To determine...