Answer:
18.61
Step-by-step explanation:
if the cost of making all of the cupcakes was 5.39, then you would subtract that from the total profit to get your answer.
You plug 7 in for x
Therefore, f(7)=7-2=5
So f(7)=5
0.42=21/50 so the answer is 21/50
I can only thin of a hot and miss method to do this . That is using Stirlings approximation for n!-
ln n! = approx n ln n - n
so if we try n = 60 this gives 4.2796 * 10^80
so we could try higher values:-
n = 65 gives an 89 digit number
n = 70 gives 98 digit number
n=71 gives me an memory error on my calculator!
Lets try an online calculator
Web2.0 calculator gives a 101 digit number or n=71
70 is your answer
