Question

The graphs below show four functions: Graph A shows function f of x equals 4 multiplied by 3 to the power of x. Graph B shows function f of x equals 4 multiplied by 3 to the power of negative x. Graph C shows function f of x equals 10 to the power of x. Graph D shows function f of x equals 10 to the power of negative x. Which graph best shows the function f(x) = 4(3)−x to represent the rate at which a radioactive substance decays? Graph A Graph B Graph C Graph D

Answer 1

Answer: Graph B

Step-by-step explanation:  Its on FLVS

Answer 2

Answer:

Graph B shows function f of x equals 4 multiplied by 3 to the power of negative x.

Step-by-step explanation:

$f(x) = 4(3)^{-x}$ is the value 4 times three raised to the negative x. Graph B is the best representation.