Respuesta :

The first one is the answer

Answer:

The one you have selected is right

Step-by-step explanation:

A constant speed is a number being added or subtracted at the same right. In this case its 50 each time

50+50= 100

100+50=150

etc

The 2nd one is being multiplied by 10 and the 3rd one is adding 100 which wouldnt be right since you started out with 50.

Hope this helps (:

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