bottles of sparkling water usually cost $1.69 each. this week they're on sale for 4 for $5 . You bought one last week and one this week. Did you pay more or less for the bottle this week? How much more or less?​

Generally, they are $1.69 apiece, and this week they are 4 for 5$

This means that this week, they are $1.25 apiece, meaning you spend less, by about $0.44

This weeks is cheaper by 44 cents

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.