September 13 2025 DSAT – Test 9G: Sample Questions & Full Analysis

Expert Breakdown of the September 2025 Digital SAT (Test 9G)

Welcome to the allsatpapers.com expert analysis! As specialists in official test materials, we know that success on the Digital SAT comes from practicing with real, official exams. The 13 September 2025 DSAT (Test 9G) is a key test form from this administration. It provides a crucial look at the types of questions, vocabulary, and mathematical reasoning skills the College Board is currently using to challenge students.

This post will provide a deep dive into this specific test, quoting key passages that customers often search for to identify the exam they need. Let's analyze what makes Test 9G a vital study tool.

Section 1: Reading & Writing Module 1 (Key Passages)

The first R&W module is designed to set your baseline. As requested, we have quoted the first two questions in full, as these are the most common passages users search for to identify this test.

Section 1: Reading & Writing Module 2 (Adaptive) Analysis

This module's difficulty adapts based on your performance in Module 1. The questions become more complex, testing more nuanced vocabulary and text structures. Here are some key passages from Module 2 of Test 9G.

Section 2: Math Module 1 Analysis

The first math module on Test 9G features a standard mix of algebra, data analysis, and geometry. The focus is on foundational skills and straightforward application.

Core Concepts on Display

• Translating to Algebra (Question 1): This question provides an image of an isosceles triangle with sides labeled $x$, $y$, and $y$. It states the perimeter is 63 inches. Your task is to create the equation. The perimeter is the sum of all sides: $x + y + y = 63$, which simplifies to (B) $x + 2y = 63$. This is a direct test of translating a description into an algebraic expression.
• Rates (Question 2): A simple but essential skill. The problem gives a total of 2,070 muskrats in a 115-acre area and asks for the population density. Density is a rate: $\text{Population} / \text{Area}$. The calculation is $2070 / 115 = 18$ muskrat per acre. The correct answer is (D) 18.
• Systems of Equations (Question 7): This question asks for the solution $(x,y)$ to the system:
  $y = -15x + 19$
  $y = -20x + 24$
  Set the equations equal to each other: $-15x + 19 = -20x + 24$
  Add $20x$ to both sides: $5x + 19 = 24$
  Subtract 19: $5x = 5$
  $x = 1$.
  Plug $x=1$ into the first equation: $y = -15(1) + 19 = 4$.
  The solution is (D) (1, 4).

Section 2: Math Module 2 (Adaptive) Analysis

This module increases the complexity, requiring multi-step problem-solving and a deeper understanding of algebraic structures.

Advanced Applications

• Structure in Algebra (Question 4): "If $(x+2)^2 = 28$, what is the value of $x^2 + 4x$?"
  This question tests your ability to see structure instead of just solving for $x$.
  1. Expand $(x+2)^2$: $x^2 + 4x + 4$.
  2. So, the equation is $x^2 + 4x + 4 = 28$.
  3. The question asks for the value of $x^2 + 4x$.
  4. Subtract 4 from both sides: $x^2 + 4x = 24$.
  The answer is (D) 24.
• Volume Ratios (Question 9): "Cube B has a volume of 216... The length of each edge of cube A is $k$ times the length of each edge of cube B. If cube A has a volume of 5,832..."
  1. Find the side length of Cube B: $\sqrt[3]{216} = 6$.
  2. Find the side length of Cube A: $\sqrt[3]{5832} = 18$.
  3. Relate the sides: $\text{Side}_A = k \times \text{Side}_B$.
  4. $18 = k \times 6$
  5. $k = 3$.

  This is a classic problem that tests the relationship between linear ratios and volume ratios. The correct answer is (B) 3.

• Advanced Factoring (Question 16): "Which expression is NOT a factor of $1,440x^4 - 56,250$?"
  This requires factoring in multiple stages:
  1. GCF: First, factor out the Greatest Common Factor. Both numbers are divisible by 90. This gives: $90(16x^4 - 625)$. So, (B) 90 is a factor.
  2. Difference of Squares: The binomial $16x^4 - 625$ is a difference of two squares: $(4x^2)^2 - (25)^2$. This factors to $(4x^2 - 25)(4x^2 + 25)$. So, (A) $4x^2 + 25$ is a factor.
  3. Difference of Squares (Again): The factor $(4x^2 - 25)$ is also a difference of two squares: $(2x)^2 - (5)^2$. This factors to $(2x - 5)(2x + 5)$. So, (D) $2x + 5$ is a factor.

  The only expression that is not a part of the final factored form is (C) $2x^2 - 5$.

Overall Difficulty and Analysis of Test 9G

After a comprehensive review of all four modules, here is our expert assessment of the 13 September 2025 (9G) DSAT:

• Overall Difficulty: Medium-Hard.
• Analysis: This test is another "form" of the September 13, 2025 exam, and it is highly similar, but not identical, to Tests 9A-9F. It pulls many of the same questions from the College Board's item bank, including the "muskrat density" problem, the "isosceles triangle" problem, and the "advanced factoring" problem. This confirms that mastering the concepts from one form (like 9A) directly prepares you for all other forms from that day.
• Reading & Writing: The section is of Medium difficulty. The vocabulary in Module 1 ("magnify," "varies from") and Module 2 ("populated," "spectacle") is very standard and heavily clued by the context. The logic is straightforward, and the grammar questions test core rules.
• Math: This section is Hard. While Module 1 is standard, Module 2 contains several high-difficulty problems designed to differentiate top scorers. The "Structure in Algebra" question (M2 Q4), the volume ratio (M2 Q9), and the advanced factoring question (M2 Q16) are all classic examples of high-level SAT reasoning.

Why This Practice Test is Essential For Your Prep

DSAT Test 9G (13 September 2025) is a perfect snapshot of the current Digital SAT. It clearly shows the test's emphasis on:

• Vocabulary in Context: You must be able to use contextual clues to determine the precise meaning and function of a word.
• Evidence-Based Reading: The ability to read a short passage or graph and find the one piece of evidence that directly supports a claim is critical.
• Algebraic Fluency: The Math section is dominated by algebra. Fluency in factoring, solving linear equations, and setting up inequalities from word problems is non-negotiable.
• Multi-Step Problem Solving: The hardest questions (like the factoring and geometry problems in Module 2) are not testing obscure concepts. They are testing your ability to execute multiple foundational concepts in the correct order.

Studying with an official past paper like Test 9G is the single best way to build the skills and pattern recognition needed to excel on test day. Analyzing your mistakes on this exam will show you exactly what to focus on in your remaining prep time.