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Algebra

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If you want a fun way to build your math skills, check out Math Playground. The games here deal with simple math, so tackling them without a calculator is a great way to exercise your brain. 

3/31 Algebra

Read the following SAT test question and then click on a button to select your answer.

Always follow the Knowsys Method and read carefully before you do anything else. Then identify the bottom line. Stop to assess your options: What could I do? What should I do? Attack the problem. After you have an answer, loop back to the bottom line to ensure that your answer is the correct one. Finally, select your answer from among the answer choices. 

If  , then

First, at the top of your scratch work, note the bottom line.



Next, assess your options. You could try to solve for x or for here, or you could pick one of the answer choices and work backwards to determine whether it is the right answer. However, the fastest and easiest way to solve this problem is simply to solve for the bottom line. The problem provides 5x - 3, so it only takes one step to find the answer:






Now look at the answer choices.











The answer is C.


On sat.collegeboard.org, 81% of responses were correct.


For more help with math, visit www.myknowsys.com!