Suppose an investment of $2,300 doubles in value every decade. The function f(x)=2,300*2^x gives the value of the investment after x decades. How much is the investment worth after 2 decades?
a. $2,355,200
b. $92,000
c. $46,000
d. $9,200
To find how much the investment is worth after 2 decades, we substitute x = 2 into the given function:
f(2) = 2,300 * 2^2
= 2,300 * 4
= 9,200.
Therefore, the investment is worth $9,200 after 2 decades. Answer: \boxed{\text{d. }\$9,200}.