Question

can anyone help me and explain how to do this please.

Determine if the function represents exponential growth or decay, and find the y-intercept of f(x) = ½ ( 4 )x.






A.

Exponential decay passing through (0, ½ )





B.

Exponential decay passing through (0, 4)





C.

Exponential growth passing through (0, ½ )





D.

Eexponential growth passing through (0, 4)

Answer 1

The base is 4, which is larger than 1, so you have exponential growth

If the base was smaller than 1, then you would have exponential decay

Answer 2

you just need to figure out the y-intercept, so you would plug in x = 0 to find y

Answer 3

im not exactly sire how to do that

Answer 4

replace x with 0, then evaluate and tell me what you get