Identify the rule relating each term in following sequence 8,-4,2,-1,1/2,1/4,1/8

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given