Formative Assessment - November2015 - Grade 9

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1 point

x > 3 and x < 10 is written as

(3 < x < 10)

(3 < x > 10)

(3 > x < 10)

(3 > x > 10)

1 point

Open circle on a number line indicates that the number is included

True

False

1 point

Evaluate

5x>10 and 4x<16

x>1/2 and x<1/4

x>2 and x<4

1 point

x < (2x - 7) or (4x + 2) > (5x - 1)

x<7/2 or x>3/9

x>7 or x<3

x>7/2 or x<3/9

x<7 or x>3

1 point

The meaning of below inequality is?

|x + 1| < 5

(-5 > x + 1 < 5)

(-5 > x + 1 > 5)

(-5 < x + 1 > 5)

(-5 < x + 1 < 5)

1 point

|x| < 4 =?

-4 > x AND x > 4

x<4 AND x>-4

1 point

The sign of inequality changes when we divide or multiply by a number > 0

True

False

1 point

Evaluate the following

(3s + 5t + 7u) + (4s + 2t - 10u)

7s+7t-17u

7s^2+7t^2-17u^2

7s+7t-3u

7s^2+7t^2-3u^2

1 point

(2x - 4y) - (-3x - 4y)

-x-8y

5x+y

-x^2+8y^2

10.

1 point

x+x=?

x^2

11.

1 point

x*x=?

2x^2

x^2

12.

1 point

4x (3x + 4y) = ?

12x^2+16xy

7x^2+8xy

12x+16xy

13.

1 point

(x^3 + x^2 + x)x^3

x^6+x^5+x^4

2x^6+2x^5+2x^3

x^6+x^5+x^3

2x^6+2x^5+2x^4

14.

1 point

4r(2rt + t) - 8t(2rt + r)

(8r^2t-16rt^2-12rt)

(8r^2t-16rt^2-4rt)

(8r^2t-8rt^2-4rt)

15.

1 point

(3x + 2)(2x - 5) = ?

3x(2x-5) + 2(3x+2)

3x(2x-5) + 2(2x-5)

16.

1 point

(x + 3)(2x - 5) = ?

2x^2-11x-15

2x^2+x-15

2x+x-15

3x^2+x-15

17.

1 point

What is correct as per the FOIL method for the equation
(x + 3)(2x + 4)

2x^2 + 4x + 12 + 6x

2x^2 + 6x + 4x + 12

2x^2 + 2x^2 + 6x + 12

2x^2 + 4x + 6x + 12

18.

1 point

(x+5)^2 = ?

(x+5) + (x+5)

(x+5) * (x+5)

19.

1 point

(2^3)^2 = ?

2^(3*2) = 2^6 = 64

2^(3+2) = 2^5 = 32

20.

1 point

(2*3)^2 = (2^2)*(3^2) = 36

True

False

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