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Axia college Math 117 – week 8 quiz

Number 1:

Length = 30

Width = 15

Number 2:

Exact: 4 + sqrt 45, 4 – sqrt 45

Approx: 10.708, -2.708

Number 3:

2 real

Number 4:

x^2-14x+49

Number 5:

Vert: (2, 9)

Symm: x = 2

Minimum at 9

Graph C

Number 6:

One real

Number 7:

-5, 2

Number 8:

36 and 37

Number 9:

Vert: (6, -42)

Symm: x = 6

Min at -42

Graph A

Number 10:

Vert: (0, 2)

Symm: x = 0

Max at 2

Graph D

Number 11:

Y inter: (0, 1)

X inter: (-1/5, 0)

Number 12:

Vert: (0,0)

Symm: x = 0

Graph B

Number 13:

Vert: (-2, 0)

Symm: x = -2

Graph D

Number 14:

Linear

Number 15:

Vert: (-4, -5)

Symm: x = -4

Max at -5

Graph A

Number 16:

Choice A

Number 17:

Careful with the “i” notation:

1/2 - i*sqrt(35)/2, 1/2 + i*sqrt(35)/2

Number 18:

-8, -4

Number 19:

Careful with the notation

7/6+sqrt(181)/6, 7/6-sqrt(181)/6

The intercepts are (sol1, 0) and (sol2, 0) (using the solutions from above)

Number 20:

Max area = 1250

Dim = 25

Number 21:

Vert: (-1, -4)

Symm: x = -1

Min is -4

Graph B

Number 22:

Soln: sqrt(2), -sqrt(2)

X inter: (sqrt(2), 0), (-sqrt(2), 0)

Number 23:

Exact = 7/2 + sqrt(29)/2, 7/2 - sqrt(29)/2

Approx = 0.807, 6.193

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