SAT Math question.

Test Preparation
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<p>with explanation plz</p>

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<p>You can count the all of the dots that are over 140 mmHG on the horizontal axis and/or over 90 mmHG on the vertical axis. I counted 10 dots. There are 24 dots in total. 10/24 simplifies to 5/12. Is that correct?</p>

<p>If the dots over 140 mm HG on the horizontal axis are considered to be one set and the dots over 90 mmHG on the vertical axis are part of another set, the result the question wants is the union of the two sets (All of the elements of the various sets.
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