Answer:
Step-by-step explanation:
R(x) = 150 (x^2 + 1) gives the monthly revenue in millions x months after an ad campaign. To determine the number of months that it will take for the revenue to be 30 million, we will substitute 30 million for R(x). It becomes
30000000 = 150(x^2 + 1)
(x^2 + 1) = 30000000/150 = 200000
x^2 = 200000 - 1 = 199999
Taking square root of both sides of the equation, it becomes
x = √199999 = 447.2
Approximately 447 months
