1

What is 2cis(-/3) in rectangular coordinates?

Select one:

a.(-1, - sqrt 3)

b.(1, - sqrt 3)

c.(1, sqrt 3)

d.(-1, sqrt 3)

e.Impossible

Question

2

What is the vertex of f(x) = x²+ 4x + 2?

Select one:

a.(2, 2)

b.(- 2, - 2)

c.(- 2, 2)

d.(2, - 2)

e.None of these

Question

3

The half-life of carbon 14 is 5,730 years.Approximately, how old is a bone that has 70% of its original carbon 14?

Select one:

a.7,500 years

b.7,000 years

c.6,500 years

d.6,000 years

e.Less than 6,000 years

Question

4

What is the exact value of sin (120 degrees)?

Select one:

a.

b..866

c.3/2

d.-1/2

e.None of these

Question

5

What is (2, - /6) in rectangular coordinates?

Select one:

a.0

b.(sqrt 3, 1)

c.(sqrt 3, -1)

d.- 1 / (sqrt (2) + sqrt (6))

e.Impossible

Question

6

Solve the system: x + y + z = 6, 2x - y + z = 3, x + y - z = 0

Select one:

a.(0, 0, 6)

b.(3, 2, 1)

c.1

d.(1, 2, 3)

e.None of these

Question

7

What is the period of y = 3cos (8x + /2) + 5?

Select one:

a.2

b.

c./2

d./3

e./4

Question

8

What is the polar representation of z = 6i?

Select one:

a.6 cis i

b.6 cis

c. cis 6

d.6 cis (/2)

e.36

Question

9

If f(x) = 3x + 2 and g(x) = x - 4, (g/f)(1) is:

Select one:

a.Undefined

b.-3/5

c.-5/3

d.3/5

e.5/3

Question

10

The graph of y = -2 sin (x - 2) + 1 has amplitude of:

Select one:

a.0

b.1

c.2

d.3

e.4