Function: Example 1

Example 1
Given the function f : x 6 x + 1 . Find the value of p if f ( 4 ) = 4 p + 5 .

Answer:
f : x 6 x + 1 f ( x ) = 6 x + 1 f ( 4 ) = 6 ( 4 ) + 1 f ( 4 ) = 25
f ( 4 ) = 4 p +   5 25 = 4 p +   5 4 p = 25 5 = 20 p = 20 4 = 5

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