Question

Book sales on the Internet (in billions of dollars) in year x are approximated by f(x) = 1.84 +2.1. In x, where x = 0 corresponds to 2000. How much will be spent on Internet book sales in 2008? Round to the nearest tenth.
a. 6.2 billion
b. 8.0 billion
c. 3.9 billion
d. 6.7 billion

Answer 1

Answer: 6.2 billion

Explanation:

f(x) = 1.84 +2.1 In x

where

x = 0 corresponds to 2000.

In 2008, x will be = 8

Therefore,

f(x) = 1.84 +2.1 Inx will be:

f(x) = 1.84 +2.1 In8

= 1.84 + 4.366

= 6.206

= 6.2 billion