why does ti nspire cx reserved
-my friend has a ti nspire cx, and she clicked on graph and then menu and the clicked on grah entry/edit, and then functon, then she filled in her function, and it said "reserved name"
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Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

Which shows the first equation written in slope-intercept form? 1/2 (2y + 10) = 7x