GED Math Test #8 3

Question 1

Solve: |2x − 4| = 10

Accepted Answer

x = 7 or x = −3

Answer

Set up two equations: 2x − 4 = 10 → 2x = 14 → x = 7, and 2x − 4 = −10 → 2x = −6 → x = −3. An absolute value equation has two solutions.

Question 2

A scatter plot shows the number of hours studied and test scores. The data shows a strong positive correlation. What does this mean?

Accepted Answer

As hours studied increase, test scores tend to increase

Answer

A positive correlation means both variables tend to increase together. Correlation does not imply causation, but the pattern shows a relationship between studying and scores.

Question 3

Simplify: (2x³y²)²

Accepted Answer

4x⁶y⁴

Answer

Apply the power rule: square each factor. 2² = 4; (x³)² = x⁶; (y²)² = y⁴. Result: 4x⁶y⁴.

Question 4

A recipe uses 2½ cups of flour to make 24 cookies. How many cups are needed to make 60 cookies?

Accepted Answer

6¼ cups

Answer

Set up a proportion: 2.5/24 = x/60. Cross-multiply: 24x = 150. x = 150/24 = 6.25 = 6¼ cups.

Question 5

What is the area of a triangle with a base of 10 inches and a height of 6 inches?

Accepted Answer

30 in²

Answer

Area of a triangle = (1/2) × base × height = (1/2) × 10 × 6 = 30 in².

GED Practice Test

GED Practice Test

GED Math Test #8 3