I have a quiz and the time is unlimited. This sentence appeared to me. The timer can only start after the setup process is finished.
What does this timer mean? Why does that time appear unlimited, please explain

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

In which form is the following function written? y = - 2(x – 3)(x + 5)