Respuesta :

Answer:

81000

Step-by-step explanation:

You need to fill in 4 in the given formula.

f(4) = 1000 * 3^4 = 81000
81,000. This because you plug in the number of hours for x. So if you start with 1,000 and you wait four hours it’s going to triple 4 times. So 3^4=81 and then you need to multiply 1,000 by 81 giving you an answer of 81,000.