3. Which description of a preimage and its image match the transformation described by (x, y) → (x, 4y)? A. The transformation is an example of a rigid motion.
B. The image has been translated four units up.
C. The image has been dilated horizontally by a scale factor of 4,
D. The image has been dilated vertically by a scale factor of 4.

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What is the value of x? enter your answer in the box. (cm)

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !

Which one is the correct answer, and why?