If the trend continued, what was the Internet advertising revenue in 2012? (Enter your answer in billions of dollars. Round your answer to two decimal places.)

Question

U.S. Internet advertising revenue grew at the rate of

R(t) = 0.82t + 1.14    (0 ≤ t ≤ 4)

billion dollars/year between 2002 (t = 0)

 and 2006 (t = 4).

 The advertising revenue in 2002 was $5.9 billion



Answer 1

Rev(t) = ∫R(t)dt = 0.41t²+1.14t + C

Rev(0) = 5.9 = 0+0+C -->> C = 5.9

Rev(t) = 0.41t²+1.14t + 5.9

For 2012, t = 8

Rev(8) = 26.24+9.12+5.9 = 41.26 billions of dollars