2. Where isf of x equals the quotient of x plus 5 and the quantity x squared plus 9 times x plus 20 discontinuous? (4 points)

-4

5

f(x) is continuous everywhere

-5,-4

3. Is the function f of x equals the quantity 2 times x plus 1 for x less than or equal to 4 and is equal to x squared plus 12 for x greater than 4 continuous?

Yes

No

4. List the discontinuities for the function f(x) = cot( 7x over 3 ). (4 points)

n( pi over two ), where n is an integer

n( pi over three ), where n is an integer

n( three pi over seven ), where n is an integer

There are no discontinuities.

5. Which of the following is true for f of x equals the quotient of the quantity x squared minus 9 and the quantity x minus 3 ? (4 points)

There is a removable discontinuity at x = 3.

There is a non-removable discontinuity at x = 3.

The function is continuous for all real numbers.