Question 1: What is the set of all possible input values for a function called?
Topic: Relations and Functions
- codomain
- kernel
- image
- domain (Correct Answer)
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Comprehensive DSST exam preparation with practice tests and flashcards.
Written by the Flying Prep Team
Reviewed by Alex Stone, who earned 99 credits via CLEP & DSST
This section covers the properties of real numbers, order of operations, and manipulation of algebraic expressions. Students should understand how to simplify expressions, work with exponents and radicals, and perform operations with polynomials including factoring techniques.
This section focuses on solving linear and quadratic equations, rational equations, and various types of inequalities. Students should master techniques for solving equations algebraically and graphically, including absolute value equations and compound inequalities.
This section involves graphing equations and inequalities on the coordinate plane, understanding slope and intercepts, and working with distance and midpoint formulas. Students should be able to graph various function types and interpret their graphical representations.
This section covers solving systems of linear equations using various methods including substitution, elimination, and graphing. Students should be able to solve real-world application problems that involve setting up and solving systems of equations.
This section covers the concept of functions, including domain and range, function notation, and composition of functions. Students should understand different types of functions (linear, quadratic, polynomial, rational, exponential, and logarithmic) and their properties, transformations, and graphs.
Preparing your assessment...
The exam difficulty depends on your algebra foundation and recent practice with mathematical problem-solving. Relations and Functions questions challenge many test-takers because they require understanding function notation and composition rather than just computation. Equations and Inequalities problems are typically straightforward if you remember solution techniques, but word problems add complexity. The 90-minute time limit creates pressure since you need to work efficiently rather than deliberate over each problem. Most working professionals find the exam moderately challenging—not impossibly difficult, but requiring focused preparation. Your success depends more on consistent practice with algebraic manipulation than memorizing formulas. The computational focus means strong arithmetic skills help significantly.
Most colleges accept a scaled score of 50 out of 80 for credit, following the American Council on Education recommendation. This represents approximately 60-65% of questions answered correctly, though the exact percentage varies since raw scores convert to scaled scores based on question difficulty. Check with your specific institution since some programs require higher scores—nursing or engineering prerequisites might need 55 or 60. Military education benefits typically use the standard 50 score. Corporate tuition reimbursement programs usually follow ACE guidelines. Remember that CLEP credit appears as pass/fail on transcripts, not as a letter grade, so reaching the minimum threshold is sufficient. Focus on reaching 50 rather than maximizing your score beyond that point.
Study time depends on your recent mathematics experience and current skill level. Professionals using quantitative analysis regularly might need 25-40 hours of focused review. Those with some algebra background but no recent practice typically require 45-70 hours. If you're starting with limited algebra knowledge, plan for 80-120 hours over 2-3 months. Don't rush the preparation—weak algebra fundamentals will hurt you throughout the exam. Focus on daily practice rather than weekend cramming sessions. Mathematical skills develop through repetition and spaced practice. Take a diagnostic practice test first to identify knowledge gaps, then create a study schedule targeting your weak areas while maintaining stronger skills.
Start with diagnostic testing to identify knowledge gaps across the five content areas. Focus heavily on Relations and Functions and Equations and Inequalities since they comprise 55% of the exam. Use college algebra textbooks rather than high school materials—the question complexity and notation match college-level expectations. Practice problems daily rather than studying theory extensively. Work through complete problem sets for polynomial operations, factoring, and function composition until the processes become automatic. Time yourself regularly to build speed and confidence. Take full-length practice exams under realistic conditions. Review mistakes immediately to understand solution methods. Create formula sheets for reference during study, but memorize key relationships since calculator availability varies by test center.
Calculator policies vary by test center, with some locations providing basic four-function calculators while others permit scientific calculators. Graphing calculators are typically prohibited. Contact your specific test center to verify their calculator policy before exam day. Don't depend on calculator availability—practice all computations by hand during preparation. The exam emphasizes algebraic manipulation and problem setup rather than complex arithmetic, so calculator restrictions shouldn't significantly impact your performance. Focus on developing strong mental math skills for basic operations like squaring numbers, computing square roots of perfect squares, and fraction arithmetic. If calculators are available, use them primarily for verification rather than primary computation to maintain your pace through the exam.
You need solid intermediate algebra skills including polynomial operations, factoring techniques, and basic equation solving. Comfort with fraction arithmetic, integer operations, and square roots is essential. If you struggled with high school Algebra II or haven't used mathematics recently, spend extra time on fundamentals before tackling college-level problems. Pre-algebra or elementary algebra courses provide insufficient background for this exam. You should understand coordinate plane basics, linear equations, and simple function concepts before beginning serious preparation. Take an online placement test or review intermediate algebra materials to assess your readiness. Don't attempt this exam without strong foundational skills—you'll waste time and money. Build the prerequisite knowledge first, then focus on college algebra content.
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