The gray whale can spend up to 30 minutes underwater. how many times will the whale need to come up for air during a 6hr period

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❖ The gray whale will need to come up 12 times during the 6 hr period.

Convert 6 hrs to mins:

1 hr = 60 mins

60 x 6 = 360 mins

Divide by 30 to see how many times the whale will need to come up:

360/30 = 12

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whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.