The exponential function can be written in the form
Now, if the initial value is 500.
It means that when x=0 then y = 500.
Looking into the given option, the correct function is
Let us check the initial value by plugging x = 0
Any number with the exponent zero is equal to 1. Thus, we have
Hence, the initial value is 500.
Therefore, the correct function is
It’s option C.
cross out 2nd and 4th an first
answe is f(x)=500(2)^x
Second thing: we can also write exp functions as a*(c^x). for x=0, c^x = 1 which lets us with a*1 = a
Third option has a =500 which is why that is the answer.
Realize that when x = 0, f(x) = 500 (2)^0 = 500 (1) = 500.
The answer is
C. f(x) = 500(2)^x
The answer is C
took this on EDGE 2020