Hi!
16^2 x 4/7 = 1,462,784
1,462,784 is a number that can be written as a fraction (1,462,784/1) therefore it is rational.
The answer is yes, because it can be written as a fraction.
Hope this helps! :)
-Peredhel
Subscription fee for a month = $ 5
Subscription fee for a writer who signs up = $ 5
Number of subscribers last month = 200
New members who joined the website = 40
Number of subscribers who left the website = 10
Hence, total subscribers in the present time = 
Now, total subscription fee received this month = 
Hence, the answer is $1150.
60x55= 3300 there are 60 seconds in a minute and there are 55 minutes so you simply multiply the seconds by the minutes