The exponential decay graph shows the expected depreciation for a new boat, selling for $3500, over 10 years a. Write an exponential function for the graph.

BUse the function in part a to find the value of the boat after 9.5 years.

Verified Answer :

Answer:

(a) \(f(x)=3500(\frac{2}{\sqrt{7}})^x\)

(b) $245.27

Explanation:

(a)

From the below graph it is clear that the graph it passes through the points (0,3500) and (2,2000).

The general form of an exponential function is

@@MATH_TOKEN_1@@

where, a is the initial value and b is growth or decay factor.

Initial value is 3500, it means a=3500.

@@MATH_TOKEN_2@@

f(x)=2000 at x=2.

@@MATH_TOKEN_3@@

@@MATH_TOKEN_4@@

@@MATH_TOKEN_5@@

@@MATH_TOKEN_6@@

@@MATH_TOKEN_7@@

The exponential function for the graph is

@@MATH_TOKEN_8@@

(b)

We need to find the value of the boat after 9.5 years.

Substitute x=9.5 in the above function.

@@MATH_TOKEN_9@@

@@MATH_TOKEN_10@@

@@MATH_TOKEN_11@@

Therefore, the value of the boat after 9.5 years is $245.27.

View image erinna

A. y=3500(2/√7)^x

B. y=$245.27