Back in November, we introduced the concept of functions (Function), and earlier this month we discussed function compositions (FunctionCompo). But each time, we left out any mention of exponents. Today we will add that little bit of complexity. On average, today's concept shows up a little later on number sense tests, but also far more often. It appeared 18 times last year (on average, once per test), with a median placement at question #53. 8 times it was at question # 72.
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Number Dojo Level: 235
In each of these examples, simply substitute in the given value of x to determine the function's output.