A used book store also started selling used CDs and videos. In the first week, the store sold 40
used CDs and videos, at $4.00 per CD and $6.00 per
video. The sales for both CDs and videos totaled
$180.00

mx+89b(-98)nb

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.

its 50 miles away from the starting point

i believe the answer is c.