1. SOLUTION Standardized Test Practice EXAMPLE 1 Substitute -3 for x . Write original function. Simplify. f ( x ) 3 x – 15 = = ( – 3 ) 3( – 3 ) – 15 f ANSWER The correct answer is A. A B C D = – 24
2. GUIDED PRACTICE for Example 1 1. Evaluate the function h ( x ) = –7 x when x = 7. –49 ANSWER