Question

Suppose an investment of $3,800 doubles in value every decade. The function gives the value of the investment after x decades. How much is the investment worth after 2 decades?

Answer 1

Doubles every decade.
Two decades.
Please provide some idea.

Answer 2

It will be an exponential function

y = a*b^x

every decade increase in x, the value of y doubles or is multiplied by 2. and starts at 3800

(x , y) = (0 , 3800)

y = a*b^x
3800 = a*b^0 = a*1
a=3800

y = 3800*b^x

Each decade for x increases by 1, the 3800 is multiplied by 2.

y =3800 * 2^x

x is the number of decades and y is the total investment