SBAC 試験問題と解答 - 模擬練習 - 練習問題・模擬試験

Question No : 1
What is the domain for

?

A.all real numbers except -3, 0, and 3
B.all real numbers except 0 and -1
C.all real numbers except -3 and 3
D.all real numbers except -3, -1, 0, and 3

正解:

Question No : 2
What is the vertex for y = x2 - 6x +13?

A.(-4,3)
B.(-3,4)
C.(3,4)
D.(4,3)

正解:

Question No : 3
For a given function, y varies directly with x. If x =

when y = 15, which of these equations represents the function?

A.
B.y = 50x
C.
D.

正解:

Question No : 4
Which of these expressions is a factor of 8x3 - 125?

A.4x2 - 10x + 25
B.4x - 25
C.2x2 + 25
D.2x - 5

正解:

Question No : 5
In the table below are points on a linear function.

At what rate is y changing with respect to the change in x?

A.-5
B.2
C.5
D.-2

正解:

Question No : 6
The graph of the exponential function y = a × bx is attached.

Which of the following statements is true about the function?

A.The domain is all real numbers less than 4, and the range is all real numbers greater than 0.
B.The domain is all real numbers greater than 0, and the range is all real numbers greater than 0.
C.The domain is all real numbers, and the range is all real numbers greater than 0.
D.The domain is all real numbers greater than 0, and the range is all real numbers.

正解:

Question No : 7
Let f(x) = 3x + 5. If g is the inverse of f, which of the following must equal g?
A)

B)

C)

D)

A.Option A
B.Option B
C.Option C
D.Option D

正解:

Question No : 8
There are 125 adults and children attending a movie in a theatre. The cost for an adult to attend the movie is $5.75 and a child pays 3.50. The theatre raised $617.50 in total sales for the movie.
If a represents the number of adults and c represents the number of children that attend the movie, which of the following systems of equations can be used to find the number of adults and children that attended the movie?

A.a + c = 125 5.75a + 3.50 c = 617.50
B.5.75a + 3.50c = 125 a + c = 617.50
C.a + c = 125 3.50a + 5.75c = 617.50
D.a + c = 617.50 3.50a + 5.75c = 125

正解:

Question No : 9
Attached is the graph of a function in the form y = ax 2 + c.
What must be the values for a and c?

A.a > 0 and c < 0
B.a > 0 and c > 0
C.a < 0 and c > 0
D.a < 0 and c < 0

正解:

Question No : 10
How many terms are in the sequence 0.5, 1, 2 , 4, …, 256?

A.8
B.16
C.10
D.The answer cannot be determined.

正解:

Question No : 11
Which of the following transforms the parent function y=

to
y =

?

A.a vertical translation to the right 2 units
B.a vertical translation to the left 2 units
C.a horizontal translation to the right 2 units
D.a horizontal translation to the left 2 units

正解:

Question No : 12
After you paint

of the walls in your
bedroom, you realize you have painted 288 square feet.
How many square feet of walls do you have left to paint in your bedroom?

A.288
B.192
C.144
D.432

正解:

Question No : 13
Given this table of values for a polynomial function y = f(x), which values of x could be possible zeros for the function?

A.C0.5 and 2.5
B.0.5 and 1.5
C.1.5 and 2.5
D.C0.5 and 0.5

正解:

Question No : 14
Which of these is equivalent to y = x 2 + 8x C 3?

A.y = (x + 4) 2 - 19
B.y = (x + 4) 2 +13
C.y = (x + 4) 2 + 63
D.y = (x + 8) 2 C 69

正解:

Question No : 15
If line l is perpendicular to line k and the equation for l is 3x + 2y = 5, then the slope for k is ____?

A.
B.
C.
D.

正解:

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