The sea surface temperatures range from −9°C to 39°C . Find the difference between the maximum and minimum temperatures.

PLz help

Find the measures of the complement and the supplement of each angle, m

On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?

This question awards 100 ! i really don’t want to fail i will also mark you !