Answer:
(x) =
Step-by-step explanation:
Let y = f(x) and rearrange making x the subject
y = 2x + 3 ( subtract 3 from both sides )
y - 3 = 2x ( divide both sides by 2 )
= x
Change y back into terms of x, hence
(x ) =
At an intersection, the red light times are normally distributed with a mean time of 3 minutes and a standard deviation of 0.25
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