Which of the following exponential functions goes through the points (1, 20) and (2, 80)?

f(x) = 5(4)−x
f(x) = 4(5)−x
f(x) = 5(4)x
f(x) = 4(5)x

Respuesta :

5(4)x is the correct answer

Answer:

The correct awnser is 5(4)x

Step-by-step explanation: