Tobias sent a chain letter to his friends, asking them to forward the letter to more friends. The number of people who receive the email increases by a factor of 444 every 9.19.19, point, 1 weeks, and can be modeled by a function, PPP, which depends on the amount of time, t (in weeks).

, where a is initial value.

Step-by-step explanation:

We have been given that Tobias sent a chain letter to his friends, asking them to forward the letter to more friends. The number of people who receive the email increases by a factor of 4 every 9.1 weeks. We are supposed to write the function to represent the given scenario.

Our function will be in form of , where,

a = Initial value,

b = Factor of increase,

= Linear function to determine the time.

Since number of people receiving email increase every 9.1 weeks, that is 1 people is 9.1 weeks, so slope of the increase would be .

Increase in number of people in t weeks would be .

Upon substituting our given values in growth function, we will get:

Therefore, our required function would be , where a is initial value.

answer is x<