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If s ( x ) = 2 - x² and t ( x ) = 3x, what is s ( t ( -7 ) )?

If s ( x ) = 2 - x² and t ( x ) = 3x, what is s ( t ( -7 ) )?
asked 25.3k views
3 votes
If s ( x ) = 2 - x² and t ( x ) = 3x, what is s ( t ( -7 ) )?

asked
User Timo Ernst
by
8.1k points

1 Answer

0 votes

Answer:

- 439

Explanation:

  • s ( x ) = 2 - x²
  • t ( x ) = 3x
  • s ( t ( -7 ) ) = ?

--------------------------

  • t (-7) = 3 * ( -7 ) = -21
  • s ( t ( -7 ) ) = s ( -21 ) = 2 - ( -21 )² = 2 - 441 = - 439
  • s ( t ( -7 ) ) = -439
answered
User Pzaenger
by
8.0k points
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