Four transformations of the function f(x) = 3x + 2 are given below. For each transformation, drag the expression that shows the result of that transformation into the box under it. Math item stem image CLEAR CHECK f(x – 5) f(x) – 5 -5f(x) f(-5x) NEXT CLOSE Reference calculator formulas glossary CLOSE Language Changes the language of the audio snippets and the glossary ENGLISH

Margin of error is calculated using the following formula:

Margin error = Z-value*SD/Sqrt (N)

Where: Z -value at 95% confidence = 1.96; SD = Standard deviation = 10 minutes; N = Sample size; Margin error = 4 minutes

Substituting;
4 = 1.96*10/Sqrt (N)
Sqrt (N) = (1.96*10)/4 = 4.9
N = 4.9^2 = 24.01 ≈ 25

Therefore, 25 commuters will be selected at random to yield these results.