Given a dilation with the origin O (0, 0), by observation determine the scale factor "K." DO, K = (6, 12) (3, 6) 1/2
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Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

How do i do this activity, is appreciated

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500