20 students had lunch together at the third test stop. they had traveled 70 kilometers. 13 students drank milk with lunch and the rest drank grape juice.

a. how many students drank grape juice?

b. how many students did not drink grape juice?

a.7 students drank grape juice

b.13 students did not drink grape juice

Step-by-step explanation:

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.