Mathematics 20-1 or 20-2 or 20-3 Placement Test

The diagram shown below is a triangular prism because the 2 parallel sides are triangular in shape. The base has a length of 16 cm and a width of 12 cm. The height of the prism is 6 cm.

The length of side K to the nearest cm is:
1. 10
2. 15
3. 16
4. 17
The diagram shown below is a triangular prism because the 2 parallel sides are triangular in shape. The base has a length of 16 cm and a width of 12 cm. The height of the prism is 6 cm.

If the area of a triangle can be determined using the formula , the the area of the triangular front surface of the prism, to the nearest cm², is:
1. 96
2. 48
3. 28
4. 22
The diagram shown below is a triangular prism because the 2 parallel sides are triangular in shape. The base has a length of 16 cm and a width of 12 cm. The height of the prism is 6 cm.

The total surface area of the triangular prism shown above, to the nearest cm² is:
1. 1152
2. 528
3. 384
4. 496
Josie was asked to solve the following linear equation. Unfortunately she made a mistake and arrived at the wrong answer. Check her work and determine on which step that she made her mistake.

Solve: 3(7 – 2x) = 14 – 8(x – 1)
1. Step 1: 3(7 – 2x) = 6(x – 1)
2. Step 2: 21 – 6x = 6x – 6
3. Step 3: 12x = 27
4. Step 4: x = 2.25
written as a mixed radical in simplest form is:
When factored completely, the factors of 2y² – 32x² are
1. 2yy – 2⁵xx
2. 2(y² – 16x²)
3. 2(y – 4x)²
4. 2(y – 4x)(y + 4x)
When factored completely, the factors of 5x² – 7x – 6 are:
1. (5x + 2)(x – 3)
2. (5x + 3)(x – 2)
3. (5x – 2)(x + 3)
4. (5x – 3)(x + 2)
The domain and range of the function y = f(x) shown above are:
The graph that represents the line is:
The equation 4x – 5y + 20 = 0 written in the form y = mx + b is:
Determine the x-intercept and y-intercept for the line defined by 4x + 3y = 12.

Record the x-intercept and then the y–intercept as ______ and ______
1. 4 and 3
2. 2 and 6
3. 4 and 4
4. 3 and 4
The system below which could have a solution of (-3, -2) is:
When the system of equations given below is solved, the value of y is:

2x + y = 0

x – y = –6
1. – 4
2. 4
3. – 2
4. 2
To solve the following system of linear equations for x, Carla used the substitution method. Unfortunately, she made a mistake which lead to the wrong answer. Check her work and determine where she made her mistake.

(1) 2x – 4y = 7

(2) 4x + y = 5
1. Step 1: Solve equation (2) for y: y = 5 – 4x
2. Step 2: Substitute into equation (1): 2x – 4(5 – 4x) = 7
3. Step 3: Simplify: 2x – 20 – 16x = 7
4. Step 4: Solve for x: