Limits of Polynomial Functions

In which of the following point the graph is continuous?

• x = -4

• x = 2

• x = 4

• x = -1

What is the $\lim_{x\rightarrow5}\frac{x^2\ -\ 25}{2x\ -\ 10}$ ?

• 2

• 5

• 10

• does not exist

• 1

• -1

• 5

• -5

• 2

• -1

• 3

• 8

• 2

• -1

• -3

• -2

Evaluate the limit.

• 0

• DNE

Evaluate the limit.

• 0

• DNE

What is the limit as -2 from the left?

• 0

If limit when x approaches to positive infinity of f(x)=x/(x²+3) is 0, then the graph of f(x)  has horizontal asymptote at y=0.

• True

• False

Which of the following functions is continuous on all values of x?

• polynomial functions

• rational functions

• exponential values

• radical functions