F(x) = x2 +1
What is ff(x))?

Which of the following shows the length of the third side, in inches, of the triangle below

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?

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