What is 6.15 expressed as a fraction?
a. 20/123
b. 246/10
c. 122/20
d. 123/80

123/20

Step-by-step explanation:

6.15 = 615/100 = (5×123)/(5×20)

= 123/20

If choice C is taken to be a typographical error that should be 123/20, then it will be the appropriate choice. Otherwise, the correct answer is not among those offered.

It may be appropriate to ask your teacher to show you how to select the correct answer from those offered.

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.