Urgent answer! lola plans to publish a magazine. she cannot publish unless she sells at least 100 subscriptions. each subscription costs $20.
the function
r()= 20
represents the amount of revenue she takes in where s is the number of subscribers.
what is the domain of
r(s) in context?
a: all whole numbers
b: all positive rational
numbers
c: all positive integers that are greater than or equal to 100
d: all positive integers that are less than or equal to 100
( explain how you got it cause i have no idea how to do this)

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.