True! A y value can have 2 x values, but a x value can have 2 y values
What Do you mean 6 passwords?
12 months at $32.25/month = $387.
<span>Tracy pays $8.50/month = $102. </span>
<span>$387 - $102 = $285 that the employer pays</span>
If e^(rt) is 3, then taking logarithms tells you
... rt = ln(3)
So, the time to triple the amount is
... t = ln(3)/0.0275 ≈ 39.95 . . . . years
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The working out that is shown in the picture appears to be correct.