1. If an ant is 100 feet away from a tree growing straight up, and the ant has to look up at an angle of 68 degrees to see the top of the tree, how tall is the tree? Select the closest answer.

Select one:

a.200 feet

b.140 feet

c.80 feet

d.20 feet

e.10 feet

2 . What are the possible rational roots of f(x) = 3x⁴- x³+ x²- x + 5?

Select one:

a.{1, 5}

b.{1/3, 5/3}

c.{1, 1/3, 5, 5/3}

d.{1, 1/5, 3, 3/5}

e.{1, 1/3, 5, 5/3}

3 ... 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

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