Answer: base = 4, height = 6
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Step-by-step explanation:
Refer to problem 1 where it says "rectangle A has a base of 2 and a height of 3". We simply multiply each of these values by the scale factor 2. The old base was 2 but now its 2*2 = 4. The old height was 3 but now it is 2*3 = 6. Therefore, rectangle B is 4 by 6