Answer to Question #56017 in Algebra for Bobby Bass

Question

1: If f(x) = x^2 + 3x + 5 , what is f(3 + h)?

A: (3 + h)^2 + 8 + h

B: h^2 + 9h + 23

C: (x^2 +3x +5)(3 + h)

D: h^2 + h + 23

2: Which of the following is true about the function shown below?

1
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√x-6

A: Its domain is (6, ∞ ) and its range is (- ∞ , ∞)

B: Its domain is (6, ∞ ) and its range is (- ∞ ,0) U(0, ∞ )

C: Its domain is (6, ∞ ) and its range is (0, ∞ )

D: Its domain is (- ∞ , 0) and its range is (0, ∞ )

3: Which of the following statements are true regarding functions. There are multiple right answers. Check all that apply.

A function is a relation in which multiple values of the input variable are paired with at least one of the output variable

A sequence is a function whose domain is the set of rational numbers.

The vertical line test may be used to determine whether a relation is a function

The horizontal line test may be used to determine whether a function is one to one.