please help with question 8 and explain steps

Question

crisforp · Answer

2 -> 7; but 7 = 2 * 2 + 3; 3 -> 9; but, 9 = 3 *2 + 3; 4 -> 11; but, 11 = 4 * 2 + 3; 5 -> 13; but, 13 = 5 * 2 + 3; 
 The rule is : ( your number ) * 2 + 3; 
 The function rule is f( x ) = 2x + 3.

crisforp · Answer

The relationship between the inputs and outputs can be represented by the formula f ( x ) = 2 x + 3 . By using this formula, you can find the output for any input value. For example, if the input is 6, the output would be 15 (i.e., f ( 6 ) = 15 ). 
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please help with question 8 and explain steps

Answer (2)

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