Answer check please? :)

1. For which value of x is there a removable discontinuity in the graph of y=(x+3)/(x^2-7x-30) ? What y -value could be used to make the graph of y continuous at this point?
Answer: x=-3; y-0

2. Suppose h(3) = 4 and h'(3) = -2 Use a tangent line approximation to estimate h(2.85).
Answer: 4.3

3. Evaluate lim x - -3 (2x^2+5x-3)/(x^2-9)
Answer: does not exist

Question

Answer check please? :)

1. For which value of x is there a removable discontinuity in the graph of y=(x+3)/(x^2-7x-30) ? What y -value could be used to make the graph of y continuous at this point?
Answer: x=-3; y-0

2. Suppose h(3) = 4 and h'(3) = -2 Use a tangent line approximation to estimate h(2.85).
Answer: 4.3

3. Evaluate lim x -> -3  (2x^2+5x-3)/(x^2-9)
Answer: does not exist